CN114521691A - Streamline vortex generator with drag reduction function and garment - Google Patents
Streamline vortex generator with drag reduction function and garment Download PDFInfo
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- CN114521691A CN114521691A CN202210090497.5A CN202210090497A CN114521691A CN 114521691 A CN114521691 A CN 114521691A CN 202210090497 A CN202210090497 A CN 202210090497A CN 114521691 A CN114521691 A CN 114521691A
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/10—Drag reduction
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- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The invention discloses a streamline vortex generator with a drag reduction function, which comprises a bottom surface, a first curved surface and a second curved surface, wherein the edges of the bottom surface, the first curved surface and the second curved surface are intersected to form the streamline vortex generator with the drag reduction function, and the intersection line of the first curved surface and the second curved surface is an arc curve so as to reduce the resistance of air flowing through the first curved surface and the second curved surface. Also discloses a garment with the drag reduction function. The streamline vortex generator with the drag reduction function provided by the invention simulates a crescent sand dune in nature, does not have a sharp corner and a thin-wall structure in geometrical characteristics, and is stamped on a garment to form the garment with the drag reduction function, so that the wearing experience of a user and the drag reduction efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of drag reduction of sports clothes, and particularly relates to a streamline vortex generator with a drag reduction function and a garment.
Background
In the prior art, functional sportswear is applied to various competition occasions and makes certain contribution to improving the competition result and ranking of athletes. Based on the basic principle that the delayed flow separation in fluid mechanics can reduce the resistance borne by an object, the aerodynamic drag reduction design of the sports garment is realized. The movement speed of high-speed sports items generally exceeds 15m/s, and good drag reduction effect can be obtained by directly carrying out micro-modification (such as yarn types, fabric trends and the like) on the surface of the fabric of the sports clothes. But for running projects with lower movement speed, the good resistance reduction effect cannot be obtained by directly carrying out micro-modification on the surface of the fabric.
In response to the above problems, the existing sports garment brands have introduced aeroSoft running-type aerodynamic drag reducing sports garments with improved Wheeler-type vortex generators imprinted on the surface, but such drag reducing sports garments also have a number of problems. For example, the improved Wheeler type vortex generator has a sharp-angled and thin-walled structure in the geometric shape, is not easy to manufacture, has a height of 2.5-3.0mm, and is easy to contact with the vortex generator when a sportsman wears the aeroshift drag reduction sportswear, so that the wearing experience of the sportsman is influenced; the improved Wheeler type vortex generator is a non-streamlined vortex generator, and the shape and the frictional resistance of the vortex generator are large; a greater number of vortex generators are typically embossed in the region, which increases the weight of the athletic garment.
Therefore, a demand exists for designing a streamline vortex generator with a drag reduction function and a garment, so as to solve the problem that the wearing experience is influenced because the drag reduction garment has sharp-angled and thin-walled structures in geometric characteristics.
Disclosure of Invention
In order to solve the technical problem that the wearing experience is influenced because the existing clothes with the drag reduction function have sharp-angled and thin-walled structures in the prior art, the streamlined vortex generator with the drag reduction function and the clothes are provided, so that the wearing experience of a user is improved.
In order to achieve the purpose, the specific technical scheme of the streamline vortex generator with the resistance reducing function and the clothing is as follows:
a streamline vortex generator with a drag reduction function comprises a bottom surface, a first curved surface and a second curved surface, wherein the edges of the bottom surface, the first curved surface and the second curved surface are intersected, and the intersection line of the first curved surface and the second curved surface is an arc-shaped curve so as to reduce the resistance of air flowing through the first curved surface and the second curved surface.
Furthermore, the first curved surface is an outer convex arc-shaped curved surface, and the second curved surface is an inner concave arc-shaped curved surface.
Further, the slope of the first curved surface is smaller than the slope of the second curved surface.
Further, the bottom surface is crescent-shaped.
Further, the distance between the vertex of the arc-shaped curve where the first curved surface and the second curved surface intersect and the bottom surface is set to be the height H, and the value range of the height H is 1.25mm to 2.25 mm.
Furthermore, the first curved surface and the second curved surface are intersected with the bottom surface to form a first vertex and a second vertex respectively after being intersected, the distance between the first vertex and the second vertex is set to be the width W, and the width W is 4.8 mm.
Further, the first curved surface and the bottom surface intersect to form a third vertex, and the distance between the third vertex and the first vertex is set to be a length L, where L is 2H.
The invention also discloses a piece of clothing with the drag reduction function, which comprises a clothing body, wherein the clothing body is provided with at least one streamline vortex generator with the drag reduction function.
Further, the surface of the garment body is provided with at least two arrangement regions, and each arrangement region is provided with a plurality of streamline vortex generators with the resistance reducing function.
Further, the garment body is a long-sleeve close-fitting sports coat or a short-sleeve close-fitting sports coat.
Further, the long-sleeve close-fitting sports coat or the short-sleeve close-fitting sports coat is provided with a plurality of arrangement areas, and the streamline vortex generators with the drag reduction function in each arrangement area are distributed in the area, close to the side, of the windward side of the upper limb.
Further, the garment body is a long-sleeve tight-fitting lower garment or a short-sleeve tight-fitting lower garment.
Further, the long-sleeve tight-fitting sports lower garment or the short-sleeve tight-fitting sports lower garment is provided with two arrangement areas, and the streamlined vortex generators with the drag reduction function in each arrangement area are distributed in the area, close to the lateral side, of the windward side of the lower limb.
Further, the streamline vortex generators with the resistance reducing function on each arrangement area are distributed in multiple rows, and the distance between every two adjacent streamline vortex generators with the resistance reducing function in each row is 25 mm; the distance between two adjacent rows of streamline vortex generators with the drag reduction function is set to be 0.26 time of the hydraulic diameter of the body part.
The streamline vortex generator with the drag reduction function and the garment have the following advantages that:
the streamline vortex generator with the drag reduction function provided by the invention simulates crescent sand dunes in nature, does not have sharp-angled and thin-walled structures in geometric characteristics, and is pressed on clothes to form the clothes with the drag reduction function, so that the wearing experience of a user and the drag reduction efficiency are improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a streamlined vortex generator with a drag reduction function according to the present invention;
FIG. 2 is a front view of a streamlined vortex generator with drag reduction of the present invention;
FIG. 3 is a simulation diagram of a streamlined vortex generator with drag reduction function according to the present invention;
FIG. 4 is a diagram of a streamlined vortex generator with drag reduction function of the present invention imprinted on a garment material;
FIG. 5 is a first wind tunnel test model diagram of the streamlined vortex generator with the drag reduction function according to the present invention;
FIG. 6 is a second wind tunnel test model diagram of the streamlined vortex generator with the drag reduction function of the present invention;
FIG. 7 is a schematic view of a layout of a garment with drag reduction features of the present invention;
FIG. 8 is a schematic view of a first embodiment of a streamlined vortex generator with a drag reduction function of the present invention disposed on a garment;
FIG. 9 is a schematic view of a second embodiment of a streamlined vortex generator with a drag reduction function of the present invention disposed on a garment;
fig. 10 is a schematic view showing a scheme of arranging a streamlined vortex generator with a drag reduction function on a garment;
fig. 11 is a schematic view of a scheme of arranging the streamline vortex generator with the drag reduction function on the garment in the invention.
The notation in the figure is:
1. a first curved surface; 2. a second curved surface; 3. a first vertex; 4. a second vertex; 5. a third vertex; 6A, a left arm arrangement area; 6B, a right arm arrangement area; 7A, a left abdomen layout area; 7B, a right flank arrangement area; 8A, a left leg arrangement area; 8B, a right leg arrangement area; 9A, a left short arm arrangement area; 9B, a right short arm arrangement area; 9C, a first left flank region; 9D, a first right flank portion arrangement region; 10A, a left thigh layout area; 10B, a right thigh area; 11A, a left arm arrangement area; 11B, a right arm arrangement area; 12A, a second left flank arrangement region; 12B, a second right flank region; 13A, a left leg arrangement region; 13B, right leg placement region.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The streamlined vortex generator and the garment having the drag reduction function of the present invention will be described with reference to fig. 1 to 11.
Most of the existing automotive or aeronautical fields use vortex generators to improve the aerodynamic characteristics or reduce the drag in the air. Inspired by the Wheeler type vortex generator technology for inhibiting flow separation at the wing, the vortex generator is introduced to the surface of clothing, and is directly adhered to the surface of the fabric through an adhesive or a hot embossing technology, so that the proper drag reduction sportswear is cut and manufactured.
Various sporting events, such as running-type, swimming-type athletic sports, may be awarded a time accurate to a fraction of a second to determine the win or loss of the game. For high-speed competitive projects, the movement speed of the high-speed competitive project is generally more than 15m/s, and good drag reduction effect can be obtained by directly carrying out micro-modification on the surface of the fabric (such as yarn type, fabric trend and the like). But for running projects with low speed (5-11m/s), the good resistance reduction effect cannot be obtained by directly carrying out micro-modification on the surface of the fabric. The streamline vortex generator with the drag reduction function provided by some embodiments of the invention can reduce the resistance on the body of the sportsman wearing the clothes by setting the external contour and the arrangement mode of the vortex generator, thereby reducing the resistance in the air.
Of course, the streamlined vortex generator with the drag reduction function provided by some embodiments of the present invention can be used as a garment worn by athletes. Such as long sleeve tight sports apparel, half sleeve tight sports apparel, footwear, headwear, gloves, and the like. The method can also be applied to the fields of construction bridges, ocean engineering and the like related to cylindrical streaming drag reduction, and achieves a better drag reduction effect. The specific use form and application scenario of the streamlined vortex generator with the drag reduction function provided by some embodiments of the present invention are not specifically limited herein.
As shown in fig. 1 and 2, a streamlined vortex generator with a drag reduction function according to some embodiments of the present invention includes a base, a first curved surface 1, and a second curved surface 2. The bottom surface is generally placed on the surface of the garment to be fixed or an area needing to reduce resistance, the bottom surface, the edges of the first curved surface 1 and the second curved surface 2 are surrounded to form a vortex generator, and the contour line formed at the intersection of the first curved surface 1 and the second curved surface 2 is an arc line. Therefore, the vortex generator provided by some embodiments of the invention has no sharp corner and thin wall structure with obvious protrusions on the geometric characteristics, the processing and manufacturing difficulty is greatly reduced, and the arms of a sportsman easily contact with the vortex generator when the sportsman wears the sports garment with the drag reduction function, so that the wearing experience of the sportsman is improved.
Specifically, the bottom of the streamline vortex generator with the drag reduction function is arranged at the bottommost surface, the streamline vortex generator with the drag reduction function is supported on a garment or other articles and is adhered to the upper part of the garment or other articles, or the streamline vortex generator with the drag reduction function can be directly adhered to a human body, and the outer contour of the streamline vortex generator with the drag reduction function formed by the first curved surface 1, the second curved surface 2 and the bottom surface is the most main factor for reducing the resistance in the air.
The following describes the structure of the streamline vortex generator with the drag reduction function in detail.
Specifically, the streamline vortex generator with the drag reduction function comprises a first curved surface 1, a second curved surface 2 and a bottom surface, wherein the edges of the bottom surface are intersected, the intersection line of the first curved surface 1 and the second curved surface 2 is an arc-shaped curve, and the arc-shaped curve has a highest point. The intersection of the first curved surface 1, the second curved surface 2 and the bottom surface forms three vertexes, namely, the intersection of the first curved surface 1 and the bottom surface forms a third vertex 5, and the intersection of the first curved surface 1 and the second curved surface 2 and the bottom surface forms a first vertex 3 and a second vertex 4. From the external outline of the streamline vortex generator with the drag reduction function, the outline structure has no sharp angle with obvious bulge, and the edges of the first curved surface 1, the second curved surface 2 and the bottom surface are intersected, so that the outline structure has no thin-wall structure, and the difficulty of processing and manufacturing is reduced.
Further, the first curved surface 1 is a convex arc-shaped curved surface, the second curved surface 2 is a concave arc-shaped curved surface, wind power in the air firstly contacts the first curved surface 1 and flows to the second curved surface 2 through the first curved surface 1, and therefore resistance in the air is reduced. Specifically, the convex arc-shaped curved surface refers to a curved surface with a curved arc that is convex toward the outside, and the concave arc-shaped curved surface refers to a curved surface with a curved arc that is concave toward the inside. The gradient of the first curved surface 1 is smaller than that of the second curved surface 2, at the moment, wind power in the air obliquely flows upwards through the surface of the first curved surface 1 and flows through the surface of the second curved surface 2, and therefore the wind power reduces the resistance in the air through the streamline vortex generator with the resistance reducing function.
As a preferred embodiment, the appearance structure of the streamline vortex generator with the drag reduction function is crescent, and the appearance structure of a crescent sand dune in nature is simulated. The bottom surface is like a crescent moon, two wings extending along the wind direction are arranged on two sides of the bottom surface, two slopes of the longitudinal section are asymmetric, the convex surface of the windward slope is gentle, and the slope of the leeward side is steep. In this embodiment, the first curved surface 1 has a relatively gentle slope, referred to as the windward side, and the second curved surface 2 has a relatively steep slope, referred to as the leeward side. The streamline vortex generator with the drag reduction function can be defined by various dimensions such as length, height and width in a specific outline structure, so that the structure of the streamline vortex generator with the drag reduction function is similar to the outline structure of a crescent sand dune.
Further, the characteristic dimensions of a streamlined vortex generator with drag reduction function are defined by length, width and height. The distance between the top point and the bottom surface of the arc curve where the first curved surface 1 and the second curved surface 2 are intersected is set as a height H, and the value range of the height H is 1.25mm to 2.25 mm. The height H is in the value range, and the drag reduction rate of the streamline vortex generator with the drag reduction function is higher. The first curved surface 1 and the second curved surface 2 intersect with the bottom surface to form a first vertex 3 and a second vertex 4 respectively after intersecting, the distance between the first vertex 3 and the second vertex 4 is set as the width W, and the width W is 4.8 mm. The first curved surface 1 and the bottom surface intersect to form a third vertex 5, and the distance between the third vertex 5 and the first vertex 3 is set to a length L, where L is 2H. Of course, the combination of the above values of the height H, the length L and the width W enables the drag reduction ratio of the streamlined vortex generator with the drag reduction function to be high, which is explained in detail by a specific experimental analysis below.
As shown in fig. 3 and 4, through the selection of the above data, two schemes can be adopted to manufacture the streamline vortex generator with the drag reduction function provided by the preferred embodiment of the present invention. The first scheme is that the device is formed by 3D printing of resin materials, and a streamline vortex generator with a drag reduction function of the type is generally used for wind tunnel tests. The second scheme is that a streamlined vortex generator object with a resistance-reducing function is hot-stamped on a fabric after being cast by a rubber material mold, and the streamlined vortex generator with the resistance-reducing function is used for manufacturing clothes with the resistance-reducing function, particularly sports clothes, provided by another embodiment of the invention.
As shown in fig. 5 and 6, the streamline vortex generator with the drag reduction function printed by the resin material is used for a wind tunnel test, and the drag reduction efficiency of the streamline vortex generator with the drag reduction function provided by some embodiments of the present invention is explained in detail by specific experimental data. Specifically, in the wind tunnel experiment, a cylindrical object is usually used as an experimental object to test the streamline vortex generator with the drag reduction function provided by some embodiments of the present invention, a fabric is wrapped on the surface of the cylindrical object, and the streamline vortex generator with the drag reduction function provided by the embodiments of the present invention is used at an angle α shown in fig. 51And alpha2Four rows are symmetrically pasted, and the interval between two adjacent streamline vortex generators with the drag reduction function in the same row is 25 mm. Wherein the angle alpha is shown1And alpha2Two sets of experimental data were set. The first set of experimental data was: alpha is alpha1Is 40 DEG and alpha2Is 55 degrees; the second set of experimental data was: alpha is alpha1Is 55 DEG, alpha2Is 70 deg..
As shown in fig. 6, the two sets of experimental data are pasted on the surface of the cylindrical object, and fig. 6 shows an actual model diagram of the streamline vortex generator with the drag reduction function.
Table 1 drag reduction ratio comparison of existing Wheeler type vortex generators in the marathon and sprint typical velocity region with streamlined vortex generators with drag reduction functionality of embodiments of the present invention
As shown in table 1, the wind tunnel experiment result shows that, under the same arrangement condition, the drag reduction efficiency of the streamline vortex generator with the drag reduction function provided by the embodiment of the invention is higher than that of the existing Wheeler type vortex generator. The streamline vortex generator with the resistance reducing function provided by some embodiments of the invention has the height H of 2.25mm and the distribution angle alpha1Is 55 DEG, alpha2The drag reduction efficiency is highest when the temperature is 70 degrees, the drag reduction rate of the marathon zone is as high as 22.39 percent, and the drag reduction rate of the sprint zone is as high as 19.53 percent.
As shown in fig. 7, a streamline vortex generator object with a drag reduction function, which is hot-stamped on a fabric after being cast by using a rubber material mold, is used for manufacturing a garment with a drag reduction function according to another embodiment of the present invention, and the distribution of the streamline vortex generator with a drag reduction function on the garment according to some embodiments of the present invention is described in detail through specific experimental data.
The embodiment of the invention also provides a garment with the drag reduction function, which comprises a garment body, wherein at least one streamline vortex generator with the drag reduction function is arranged on the garment body. The surface of the garment body is provided with at least two arrangement areas, and each arrangement area is provided with a plurality of streamline vortex generators with the drag reduction function.
Specifically, the arrangement positions of a plurality of streamline vortex generators having the drag reduction function are shown in the enlarged window of fig. 7. The plurality of vortex generators are arranged in the arrangement position, and as can be seen from the figure, two streamline vortex generators with the drag reduction function at a distance of G1 are called as the same column, two streamline vortex generators with the drag reduction function are arranged in parallel with the same column, and are called as a first column, a second column and a third column from left to right in the figure in sequence, the first column, the second column and the third column are arranged in parallel, the first column comprises two streamline vortex generators with the drag reduction function, the second column comprises three streamline vortex generators with the drag reduction function, and the third column comprises two streamline vortex generators with the drag reduction function. Of course, only such an arrangement of the vortex generators is shown in fig. 7, and the arrangement of other types of vortex generators is not specifically limited herein. It is also possible to arrange a plurality of rows or to arrange the same or different number of streamlined vortex generators having a drag reduction function in each row.
As a preferred embodiment, the distance between two adjacent vortex generators in each row is 25mm, and the distance G2 between two adjacent rows of streamline vortex generators with the drag reduction function is set to be 0.26 times the hydraulic diameter of the body part. The hydraulic diameter is actually obtained by taking a special-shaped cross section as a circular cross section, and the numerical relationship between G2 and the body part is further determined.
In the disclosed embodiments of the present invention, only the specific values of the above embodiments are given, and the pitch and size of the streamlined vortex generators with the drag reduction function are mainly recommended for a specific type of athletes playing in a specific type of event. Therefore, the layout proposed for the body type can be according to parameters such as the height of the athlete, the body circumference, the length of four limbs and the like, and can also be according to different sport types, and certainly, non-professional athletes can also use the clothes with the drag reduction function, and can layout the streamline vortex generator with the drag reduction function according to the parameters of the streamline vortex generator, so that the drag reduction efficiency of the streamline vortex generator is maximized, and the sport requirements of people are met.
The garment with the resistance reducing function is designed aiming at sports projects such as running, the garment comprises a garment body, a left arm arrangement region 6A, a right arm arrangement region 6B, a left waist and abdomen arrangement region 7A, a right waist and abdomen arrangement region 7B, a left leg arrangement region 8A and a right leg arrangement region 8B are arranged on the garment body, and through the arrangement regions, the streamline vortex generators with the resistance reducing function are arranged in regions, close to the lateral direction, of the windward side of limbs, and the lateral direction is mainly one side, contacted by an external contour and external wind power, so that the streamline vortex generators with the resistance reducing function in the arrangement regions reduce air resistance to the greatest extent.
In particular, such a garment is a tight-fitting garment, which can be classified into a long-sleeve tight-fitting upper garment or a short-sleeve tight-fitting upper garment, a long-sleeve tight-fitting lower garment or a short-sleeve tight-fitting lower garment, depending on the change of seasons and personal preference. The size of the arrangement areas and the number of the arrangement areas can be respectively designed according to the length of the garment, so that the air resistance of the sports garment in the air is reduced to the maximum extent.
As shown in fig. 8, fig. 8 illustrates the short sleeved close-fitting upper garment provided with four arrangement areas, which are a left side short arm arrangement area 9A, a right side short arm arrangement area 9B, a first left side abdomen area 9C and a first right side abdomen area 9D, respectively. Of course, as a preferred embodiment, the left and right short arm arrangement regions 9A and 9B are symmetrically disposed, and the first left and right abdomen arrangement regions 9C and 9D are symmetrically disposed.
Specifically, the arrangement directions of the streamline vortex generators having the drag reduction function in the left short arm arrangement region 9A and the right short arm arrangement region 9B are symmetrically set with the center of the short sleeve tight jacket as the center. The arrangement direction of the streamline vortex generators with the resistance reducing function in the left short arm arrangement region 9A is that the first curved surface 1 is close to the central symmetry axis, and the arrangement direction of the streamline vortex generators with the resistance reducing function in the right short arm arrangement region 9B is that the first curved surface 1 is close to the central symmetry axis. Likewise, the arrangement direction of the streamline vortex generators having the drag reduction function in the first left-side abdomen area 9C and the first right-side abdomen area 9D is the same as the arrangement direction of the left-side short arm area 9A and the right-side short arm area 9B.
As shown in fig. 9, fig. 9 shows a short sleeve tight sports lower garment provided with two arrangement areas, a left thigh arrangement area 10A and a right thigh arrangement area 10B, respectively. Of course, as a preferred embodiment, the left thigh area 10A and the right thigh area 10B are symmetrically disposed.
Specifically, the arrangement directions of the streamline vortex generators with the drag reduction function in the left thigh arrangement area 10A and the right thigh arrangement area 10B are symmetrically arranged with the center of the short sleeve tight sports lower garment as the center. The arrangement direction of the streamline vortex generators with the resistance reducing function in the left thigh arrangement area 10A is that the first curved surface 1 is close to the central symmetry axis, and the arrangement direction of the streamline vortex generators with the resistance reducing function in the right thigh arrangement area 10B is that the first curved surface 1 is close to the central symmetry axis.
As shown in fig. 10, fig. 10 shows a long-sleeve close-fitting athletic jacket provided with four arrangement regions, which are a left-side arm arrangement region 11A, a right-side arm arrangement region 11B, a second left-side abdomen region 12A, and a second right-side abdomen region 12B. Of course, as a preferred embodiment, the left arm arrangement region 11A and the right arm arrangement region 11B are symmetrically disposed, and the second left abdomen arrangement region 12A and the second right abdomen arrangement region 12B are symmetrically disposed.
Specifically, the arrangement directions of the streamline vortex generators having the drag reduction function in the left arm arrangement region 11A and the right arm arrangement region 11B are symmetrically set with the center of the long-sleeve close-fitting sports coat as the center. The arrangement direction of the streamline vortex generators with the resistance reducing function in the left arm arrangement region 11A is that the first curved surface 1 is close to the central shaft, and the arrangement direction of the streamline vortex generators with the resistance reducing function in the right arm arrangement region 11B is that the first curved surface 1 is close to the central shaft. Similarly, the arrangement direction of the streamline vortex generators having the drag reduction function in the second left-side abdomen area 12A and the second right-side abdomen area 12B is the same as the arrangement direction of the left-side arm area 11A and the right-side arm area 11B.
As shown in fig. 11, fig. 11 shows a long-sleeve close-fitting athletic lower garment provided with two arrangement regions, a left leg arrangement region 13A and a right leg arrangement region 13B. Of course, as a preferred embodiment, the left side leg arrangement region 13A and the right side leg arrangement region 13B are symmetrically disposed.
Specifically, the arrangement directions of the streamline vortex generators having the drag reduction function in the left leg arrangement region 13A and the right leg arrangement region 13B are symmetrically set with the center of the long-sleeve tight-fitting athletic lower garment as the center. The arrangement direction of the streamline vortex generators with the resistance reducing function in the left leg arrangement region 13A is that the first curved surface 1 is close to the central shaft, and the arrangement direction of the streamline vortex generators with the resistance reducing function in the right leg arrangement region 13B is that the first curved surface 1 is close to the central shaft.
The difference between the arrangement areas of the long-sleeve tight-fitting sports coat and the short-sleeve coat is that streamline vortex generators with the function of reducing drag need to be arranged on the windward sides of four limbs, so that the resistance in the air is reduced to the greatest extent when a sportsman wears a piece of clothes with the function of reducing drag.
Further, the garment body is a sports garment made of knitted fabric or other fabrics, the streamline vortex generator with the resistance reducing function is directly printed on the garment fabric through a 3D printing technology, and the streamline vortex generator with the resistance reducing function can be arranged on an article needing resistance reduction through bonding and other modes. The fixing manner of the streamlined vortex generator having the drag reduction function is not particularly limited herein.
The streamline vortex generator with the drag reduction function provided by the invention simulates crescent sand dunes in nature, does not have sharp-angled and thin-walled structures in geometric characteristics, and is pressed on clothes to form the clothes with the drag reduction function, so that the wearing experience of a user and the drag reduction efficiency are improved.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (14)
1. A streamline vortex generator with a drag reduction function is characterized by comprising a bottom surface, a first curved surface and a second curved surface, wherein the edges of the bottom surface, the first curved surface and the second curved surface are intersected, and the intersection line of the first curved surface and the second curved surface is an arc-shaped curve so as to reduce the resistance of air flowing through the first curved surface and the second curved surface.
2. The streamlined vortex generator with drag reduction function of claim 1, wherein the first curved surface is a convex arc-shaped curved surface and the second curved surface is a concave arc-shaped curved surface.
3. The streamlined vortex generator with drag reducing function of claim 2, wherein the slope of the first curved surface is smaller than the slope of the second curved surface.
4. A streamlined vortex generator with drag reducing function according to any of claims 1-3 wherein the shape of the bottom surface is crescent-shaped.
5. The streamlined vortex generator having a drag reduction function of claim 1, wherein the distance between the vertex and the bottom of the arc-shaped curve where the first curved surface and the second curved surface intersect is set to a height H, and the value of H ranges from 1.25mm to 2.25 mm.
6. A streamlined vortex generator with drag reducing function according to claim 1 or 5 wherein the first curved surface and the second curved surface intersect the base surface to form a first apex and a second apex, respectively, and the distance between the first apex and the second apex is set to a width W, W being 4.8 mm.
7. The streamlined vortex generator with drag reduction function of claim 6, wherein the first curved surface and the bottom surface intersect to form a third vertex, and the distance between the third vertex and the first vertex is set to be a length L, where L is 2H.
8. A garment with a drag reduction function, which is characterized by comprising a garment body, wherein at least one streamlined vortex generator with the drag reduction function is arranged on the garment body, and the streamlined vortex generator is as claimed in any one of claims 1 to 7.
9. The garment with the drag reduction function according to claim 8, wherein at least two arrangement regions are provided on the surface of the garment body, and a plurality of streamlined vortex generators with the drag reduction function are provided on each arrangement region.
10. The drag reduction garment of claim 9, wherein the garment body is a long sleeve tight sports coat or a short sleeve tight sports coat.
11. The drag reduction garment of claim 10, wherein the long-sleeve tight-fitting or short-sleeve tight-fitting jacket is provided with a plurality of arrangement areas, and the streamlined vortex generators having the drag reduction function in each arrangement area are disposed in an area of the upper limb body in the windward side near the lateral direction.
12. The garment with the drag reduction function according to claim 9, wherein the garment body is a long-sleeve tight sports lower garment or a short-sleeve tight sports lower garment.
13. The garment with the drag reduction function according to claim 12, wherein the long-sleeve tight-fitting sports lower garment or the short-sleeve tight-fitting sports lower garment is provided with two arrangement areas, and the streamlined vortex generators with the drag reduction function in each arrangement area are arranged in an area close to the lateral side of the windward side of the lower limb body.
14. A drag reducing garment as claimed in any one of claims 9 to 13 wherein the streamlined vortex generators with drag reducing function on each layout area are arranged in a plurality of rows with a spacing of 25mm between two adjacent streamlined vortex generators with drag reducing function in each row; the distance between two adjacent rows of streamline vortex generators with the drag reduction function is set to be 0.26 time of the hydraulic diameter of the body part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210090497.5A CN114521691A (en) | 2022-01-25 | 2022-01-25 | Streamline vortex generator with drag reduction function and garment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210090497.5A CN114521691A (en) | 2022-01-25 | 2022-01-25 | Streamline vortex generator with drag reduction function and garment |
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| CN114521691A true CN114521691A (en) | 2022-05-24 |
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| CN202210090497.5A Pending CN114521691A (en) | 2022-01-25 | 2022-01-25 | Streamline vortex generator with drag reduction function and garment |
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Application publication date: 20220524 |