CN207423489U - A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement - Google Patents
A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement Download PDFInfo
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- CN207423489U CN207423489U CN201721505633.3U CN201721505633U CN207423489U CN 207423489 U CN207423489 U CN 207423489U CN 201721505633 U CN201721505633 U CN 201721505633U CN 207423489 U CN207423489 U CN 207423489U
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- pressure measurement
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Abstract
A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement, including rake body, probe and cooperation section, the leading edge of the rake body is wedge shape, it harrows body generally curved configuration and extends to extension, it harrows body and includes single or multiple rake arms, probe is through rake body center and stretches out leading edge, and cooperation section is mounted on the bottom of rake body and is connected with tablet.The utility model can arrange more intensive probe near wall, obtain the interval smaller data point distribution of vertical direction, a kind of more economic, efficient mode is provided for the measurement of Boundary Layer on Flat Plate.
Description
Technical field
The utility model is related to arrive aerodynamic testing research field, and in particular to be ground to correlations such as wind tunnel test, flight tests
A kind of new pressure measurement rake design for Boundary Layer on Flat Plate measurement in the boundary layer measurement technology studied carefully.
Background technology
It is to study the important means of boundary layer correlation flow field problem to harrow Measured Boundary laminar flow parameter distribution by pressure measurement, is led to
The data such as boundary layer thickness, velocity profile distribution can be obtained by crossing measurement, be mainly used in wind tunnel test, flight test etc..
Currently used pressure measurement rake is vertical configuration (Fig. 1), and such routine pressure measurement rake rake arms only extends in vertical direction,
Probe is vertically distributed.To avoid that flowing interference occurs between probe, larger spacing must be kept between probe, so that often
It is very low near wall probe distribution density to advise pressure measurement rake, experiment, which need to be repeated several times, could obtain the smaller data point point in interval
Cloth.
For tablet, it will be assumed that boundary layer thickness to being evenly distributed, therefore can extend probe to distribution in exhibition, from
And reduce the vertical direction spacing between probe, by keeping being opened up enough to spacing to avoid that flowing interference occurs between probe, with this
To overcome the shortcomings of conventional pressure measurement rake.
The content of the invention
The purpose of this utility model is to overcome conventional pressure measurement rake near wall probe distribution density is insufficient the shortcomings that,
A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement is provided, more intensive probe can be arranged near wall, is obtained
The interval smaller data point distribution of vertical direction provides a kind of more economic, efficient mode for the measurement of Boundary Layer on Flat Plate.
The technical solution of the utility model is：A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement, including rake
Body, probe and cooperation section, the leading edge of the rake body is wedge shape, harrows body generally curved configuration and extends to extension, harrows body bag
Containing single or multiple rake arms, probe is through rake body center and stretches out leading edge, and cooperation section is mounted on the bottom of rake body and connects with tablet
It connects.
Further, probe through rake body center and stretches out the distance of leading edge more than length of the rake body along flow direction.
Further, the key groove for harrowing body leading edge is less than 30 °.
Further, rake body is opened up to extended distance in sheet flow interference-free coverage area.
Further, curved configuration is determined according to the boundary layer measured zone of concern；When only focusing on close to flat plate wall area
When domain boundary layer measures, curved configuration is the arc segment or straightway extended from rake body bottom to exhibition to one or both sides；When
When both having paid close attention to close to the measurement of flat plate wall regional edge interlayer or having taken into account the region away from wall surface, curved configuration be from rake body bottom to
Opening up the arc segment extended to one or both sides, either the end of straightway arc segment or straightway connects the straight line of vertical direction again
Section.
Further, probe leading edge falls exterior angle.
Further, probe through rake body center and is harrowed body by being welded and fixed.
Further, rake body is configured as wedge shape and is followed by flat segments.
The advantageous effect of the utility model compared with prior art is：
(1) the utility model is mainly made of the rake body with curved configuration and stainless steel tube probe.It is small to harrow body leading edge
The glut of angle, probe front chamfering, the flowing reduced to greatest extent between rake body and probe are disturbed, and have pressure measurement rake good
Good aerodynamic characteristic.Harrowed different from conventional pressure measurement, the probe of new pressure measurement rake in exhibition to being distributed on vertical direction,
Near wall can arrange more intensive probe.It is close near wall probe distribution that the utility model overcomes conventional pressure measurement rake
The defects of degree deficiency, the new pressure measurement rake can obtain more intensive data point distribution in certain vertical direction height.
(1) conventional pressure measurement rake is compensated for near wall probe distribution density is insufficient the defects of, it can be in the vertical direction
With smaller arranged for interval probe.
(2) single test can obtain more intensive data distribution, can significantly reduce examination in the measurement experiment of boundary layer
It tests number, save experimentation cost, improve test efficiency.
Description of the drawings
Fig. 1 is that schematic diagram is harrowed in conventional pressure measurement；
Fig. 2 is that schematic diagram is harrowed in the new pressure measurement of the differently curved configuration of the utility model；
Fig. 3 is to be harrowed with the new pressure measurement of both arms configuration design；
Fig. 4 harrows body dimensional parameters for the pressure measurement of the utility model both arms configuration.
Specific embodiment
Below in conjunction with the accompanying drawings and example elaborates to the utility model.
A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement, as shown in figure 3, including rake body 1, probe 2 and cooperation section
3, the rake body includes two rake arms, harrows the leading edge of body as wedge shape, leading edge section is less than 30 ° for key groove.Harrow body generally
It curved configuration and extends to extension, opens up to extended distance in sheet flow interference-free coverage area.Probe passes through rake body center and stretching
Leading edge, probe front are more than length of the rake body along flow direction with rake body leading edge distance, and probe leads to through rake body center and rake body
It crosses and is welded and fixed.Cooperation section is mounted on the bottom of rake body and is connected with tablet.It harrows the leading edge section of body and is less than 30 ° for key groove.
Fig. 2 gives the rake body configuration of part of representative, and both arms configuration can be used for the larger operating mode of unfolding space, and this kind of configuration can
Arrange a fairly large number of probe, vertical direction probe distribution is more intensive；Single armed configuration can be used for the smaller operating mode of unfolding space.
The configuration being made of Hypothesis of Single Curve Build Up section or straightway is mainly used for only focusing on the operating mode of near wall boundary layer measurement, by a plurality of song
The configuration of line segment or straightway composition can also take into account the region away from wall surface in addition to available for measurement near wall boundary layer.
Attached drawing discloses a preferred embodiment of the utility model without limitation, below with reference to attached drawing in detail
Bright the technical solution of the utility model.
The both arms configuration that the present embodiment selection is made of single straightway designs and machined a V-type pressure measurement rake, harrows body
Detailed dimensions parameter is shown in Fig. 4.Stainless steel tube probe is mounted on rake arms center line, and vertical direction is at intervals of 2mm, measuring point side vertically
1 is shown in Table to height distribution.The cylindrical fit section of diameter 10mm is arranged at rake body bottom, for being connected with tablet.
Design and processing technology：1) parameter designing：Suitable design parameter, the present embodiment measuring point are selected according to measurement request
Vertical direction distribution is 2~29mm (table 1), and for measuring point vertical direction at intervals of 2mm, it is about 6mm to open up to interval, harrows body arm exhibition
About 80mm, probe outer diameter 2mm (internal diameter 1.5mm)；2) body design is harrowed：It is three-dimensional using the vertical body modeling method design pressure measurement rake of three-dimensional
Figure；3) body processing is harrowed：Rake stature material is selected according to Test Cycle, the present embodiment rake stature material is 30CrMnSiA, using wire cutting
With the method processing rake body that machine milling is combined, and it is heat-treated to strengthen harrowing body intensity；4) probe is installed：In rake arms center line
The upper through hole for beating several diameters 2mm, probe are extended to through through hole in front of rake body, and probe front is more than with rake body leading edge distance
Length of the body along flow direction is harrowed, probe is fixed on rake by welding.
1 measuring point vertical direction height of table
| Measuring point is numbered | Measuring point height (mm) |
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 8 |
| 5 | 10 |
| 6 | 12 |
| 7 | 14 |
| 8 | 16 |
| 9 | 18 |
| 10 | 20 |
| 11 | 22 |
| 12 | 24 |
| 13 | 26 |
| 14 | 28 |
The preferred embodiment of the utility model is illustrated above, but the utility model is not limited to above-mentioned reality
Apply example.It will be apparent to those skilled in the art that in the scope recorded in claims, it should be apparent that it is conceivable that various
Modification or fixed case fall within the technology scope of the utility model certainly.
The utility model unspecified part belongs to common sense well known to those skilled in the art.
Claims (8)
1. a kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement, it is characterised in that：Including rake body, probe and cooperation section, institute
The leading edge for the rake body stated is wedge shape, harrows body generally curved configuration and extends to extension, rake body includes single or multiple rake arms, visits
Pin is through rake body center and stretches out leading edge, and cooperation section is mounted on the bottom of rake body and is connected with tablet.
2. pressure measurement rake according to claim 1, it is characterised in that：The distance at probe through rake body center and stretching leading edge is big
In length of the rake body along flow direction.
3. pressure measurement rake according to claim 1, it is characterised in that：The key groove for harrowing body leading edge is less than 30 °.
4. pressure measurement rake according to claim 1, it is characterised in that：Rake body is opened up to extended distance in sheet flow interference-free coverage area
It is interior.
5. pressure measurement rake according to claim 1, it is characterised in that：Curved configuration is true according to the boundary layer measured zone of concern
It is fixed；When only focusing on close to the measurement of flat plate wall regional edge interlayer, curved configuration is from rake body bottom to exhibition to one or both sides
The arc segment or straightway of extension；When the region for both paying close attention to close to the measurement of flat plate wall regional edge interlayer or taking into account separate wall surface
When, curved configuration is arc segment either straightway arc segment or the straight line extended from rake body bottom to exhibition to one or both sides
The end of section connects the straightway of vertical direction again.
6. pressure measurement rake according to claim 1, it is characterised in that：Probe leading edge falls exterior angle.
7. pressure measurement rake according to claim 1, it is characterised in that：Probe passes through welding through rake body center and rake body
It is fixed.
8. pressure measurement rake according to claim 1, it is characterised in that：Rake body is configured as wedge shape and is followed by flat segments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505633.3U CN207423489U (en) | 2017-11-13 | 2017-11-13 | A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505633.3U CN207423489U (en) | 2017-11-13 | 2017-11-13 | A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement |
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| Publication Number | Publication Date |
|---|---|
| CN207423489U true CN207423489U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721505633.3U Active CN207423489U (en) | 2017-11-13 | 2017-11-13 | A kind of new pressure measurement rake for Boundary Layer on Flat Plate measurement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551339A (en) * | 2020-04-28 | 2020-08-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model |
| CN112014063A (en) * | 2020-11-02 | 2020-12-01 | 中国空气动力研究与发展中心低速空气动力研究所 | A stores pylon for wind-tunnel test |
| CN112067246A (en) * | 2020-09-21 | 2020-12-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Asymmetric convex boundary layer pressure measurement framed bent |
| CN112539909A (en) * | 2020-11-30 | 2021-03-23 | 中国空气动力研究与发展中心 | Gantry crane device for boundary layer measurement in pulse wind tunnel |
| CN113267313A (en) * | 2021-07-19 | 2021-08-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Pressure measuring rake and stabilizing method thereof |
| CN115839817A (en) * | 2023-02-21 | 2023-03-24 | 中国航空工业集团公司沈阳空气动力研究所 | Near-wall multi-point boundary layer measuring device and method for wing test |
-
2017
- 2017-11-13 CN CN201721505633.3U patent/CN207423489U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551339A (en) * | 2020-04-28 | 2020-08-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model |
| CN111551339B (en) * | 2020-04-28 | 2021-10-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Design method of special pressure measuring rake for deformed flow channel of wing-body fusion aircraft ventilation model |
| CN112067246A (en) * | 2020-09-21 | 2020-12-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Asymmetric convex boundary layer pressure measurement framed bent |
| CN112014063A (en) * | 2020-11-02 | 2020-12-01 | 中国空气动力研究与发展中心低速空气动力研究所 | A stores pylon for wind-tunnel test |
| CN112539909A (en) * | 2020-11-30 | 2021-03-23 | 中国空气动力研究与发展中心 | Gantry crane device for boundary layer measurement in pulse wind tunnel |
| CN113267313A (en) * | 2021-07-19 | 2021-08-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Pressure measuring rake and stabilizing method thereof |
| CN113267313B (en) * | 2021-07-19 | 2021-09-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Pressure measuring rake and stabilizing method thereof |
| CN115839817A (en) * | 2023-02-21 | 2023-03-24 | 中国航空工业集团公司沈阳空气动力研究所 | Near-wall multi-point boundary layer measuring device and method for wing test |
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