CN108507755A - Turbulence effect simulator - Google Patents

Turbulence effect simulator Download PDF

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Publication number
CN108507755A
CN108507755A CN201810422330.8A CN201810422330A CN108507755A CN 108507755 A CN108507755 A CN 108507755A CN 201810422330 A CN201810422330 A CN 201810422330A CN 108507755 A CN108507755 A CN 108507755A
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China
Prior art keywords
fan
different
opening
turbulence effect
black matrix
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CN201810422330.8A
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孙晓明
龚建华
吴雪
张宁
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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Priority to CN201810422330.8A priority Critical patent/CN108507755A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/08—Aerodynamic models
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
    • G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
    • G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
    • G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Algebra (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid Mechanics (AREA)
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Abstract

Turbulence effect simulator belongs to turbulent flow technical field；The turbulence effect simulator includes the black matrix of opening upwards, and the tank body downward in black matrix upper opening is arranged, is connected by stretching structure between the opening of black matrix and the opening of tank body, stretching structure is internally provided with the double-deck fan；Stretching structure includes internal layer telescoping tube, insulating layer and outer layer telescoping tube successively from inside to outside, and internal layer telescoping tube includes the telescoping tube composition for being arranged at intermediate non-telescoping end and being connected to non-refreshing contracting end both ends, and iris structure is installed on non-refreshing contracting end；The double-deck fan includes the first fan and the second fan setting up and down, and the blade quantity of the first fan and the second fan is different, and rotating speed is different, turns to different, and each blade width in the first fan and the second fan is different；The present invention forms the characteristic of strong convection using hot and cold gas, directly generates the air-flow for generating turbulence effect, realizes the purpose that turbulence effect is directly simulated.

Description

Turbulence effect simulator
The application is application for a patent for invention《A kind of aero-optical effect simulator》Divisional application.
The original bill applying date：2016-10-08.
Original bill application number：2016108763715.
Original bill denomination of invention：A kind of aero-optical effect simulator.
Technical field
Turbulence effect simulator belongs to turbulent flow technical field.
Background technology
Aircraft is in atmosphere high speed flight, due to generating actual gas effect between its optical dome and free incoming Answer, SHOCK WAVE INDUCED boundary layer separation, interfering with each other without viscosity flow and boundary layer, to generate because of current density variation, temperature Complex flowfield caused by variation, constituent variation and gas molecule ionization etc., this causes heat, heat to infrared imaging detection system Radiation and image transmitting interference cause target offset, shake, obscure, and this effect is known as turbulence effect.
Turbulence effect brings adverse effect to infrared image terminal guidance, makes detection, tracking and identification of the target seeker to target Ability declines, and then influences terminal guidance precision.Since flow field density changes, the original road for the light propagated wherein is changed Diameter generates deviation and phase change, causes the offset for causing image on imaging plane, obscures, shake and energy loss.If Turbulent flow degradation mechanism can be explored, it will be able to correct Turbulence-degraded Images, reduce aberration, improve quality of optical imaging.As it can be seen that visiting Rope turbulent flow degradation mechanism is the committed step for improving picture quality.
Turbulent flow degradation mechanism is explored, needs to simulate turbulence effect.Currently, many turbulence effect simulators are all optical modes Quasi- device, such as application No. is 201410456264.8 patents of invention《Aero-optical effect simulator based on distorted image 》And algorithm simulation, such as application No. is 201310193486.0 patents of invention《A kind of side of simulation aero-optical effect Method and system》, these simulators or method all do not directly generate the air-flow for generating turbulence effect, are consequently belonging to indirect mould It is quasi-, and be not belonging to directly simulate, therefore also have any different apart from actual turbulence effect.
Invention content
To solve the above-mentioned problems, the invention discloses a kind of turbulence effect simulator, which utilizes cold and hot Gas forms the characteristic of strong convection, directly generates the air-flow for generating turbulence effect, realizes the purpose that turbulence effect is directly simulated.
The object of the present invention is achieved like this：
Turbulence effect simulator includes the black matrix of opening upwards, and the tank body downward in black matrix upper opening is arranged, and black matrix is opened It is connected by stretching structure between mouth and the opening of tank body, the stretching structure is internally provided with the double-deck fan；
The black matrix includes ceramic layer, middle layer, cooling layer and shell successively from inside to outside；It is provided among the middle layer Resistance wire, inner wall are provided with temperature sensor, the cooling layer water-filling；
The top of the tank is provided with opening, and lid is provided in opening；
The stretching structure includes internal layer telescoping tube, insulating layer and outer layer telescoping tube, the internal layer telescoping tube successively from inside to outside Telescoping tube composition including being arranged at intermediate non-telescoping end and being connected to non-refreshing contracting end both ends, is installed double-deck on non-refreshing contracting end Fan；
The bilayer fan includes the first fan and the second fan setting up and down, the blade of first fan and the second fan Quantity is different, and rotating speed is different, turns to different, each blade width difference in the first fan and the second fan.
Above-mentioned vertical turbulence effect simulator further includes water tank and water pump, respectively has one at the top and bottom of the cooling layer Water in water tank is pumped into cooling layer outlet at bottom by a outlet, water pump, and water is from cooling layer top exit reflow tank.
Above-mentioned vertical turbulence effect simulator, the lid are stove circle structure, including multiple diameters it is different, be nested successively, Section is the annular ring of hierarchic structure.
Above-mentioned vertical turbulence effect simulator, the tank body are stretching structure.
The above vertical turbulence effect simulator, further includes optical imaging system, and the optical imaging system includes light source, Pin hole, collimation lens, grating, object lens and imaging sensor；The light beam that light source is sent out forms point light source through needle passing hole, using Collimated light beam is formed after collimation lens collimation, illuminates grating, the grating is separately positioned on the object space of object lens with imaging sensor And image space；Wherein, light source, pin hole, collimation lens and grating are arranged inside black matrix, and imaging sensor is arranged in tank interior, Object lens are arranged inside black matrix or tank interior.
The grating can where it 90 degree of plane internal rotation.
Advantageous effect：
The first, due to using black matrix and tank body be open it is opposite by the way of be arranged, it is strong right to be formed using hot and cold gas The characteristic of stream directly generates the air-flow for generating turbulence effect, realizes the purpose that turbulence effect is directly simulated；
The second, due to being connected by stretching structure between the opening of black matrix and the opening of tank body, the length of stretching structure, energy are adjusted The convection current for enough changing hot and cold gas is strong, and then changes gas turbulence parameter, therefore can change turbulence effect simulation effect, into And increase the simulation context of turbulence effect simulator of the present invention；
Third, due to being provided with the double-deck fan, the bilayer fan includes the first fan and the second fan setting up and down, described The blade quantity of first fan and the second fan is different, and rotating speed is different, turns to different, each of the first fan and the second fan Blade width is different；This blade quantity is different, and rotating speed is different, turns to difference, the different design of each blade width can be true The randomness for protecting turbulent flow avoids turbulent flow simulation from having the problem of local period characteristic, emulation distortion.
Description of the drawings
Fig. 1 is the structural schematic diagram of turbulence effect simulator of the present invention.
Fig. 2 is the structural schematic diagram of black matrix.
Fig. 3 is the structural schematic diagram of stretching structure.
Fig. 4 is the structural schematic diagram of black matrix in specific embodiment two.
Fig. 5 is the structural schematic diagram of lid.
Fig. 6 is the structural schematic diagram of optical imaging system in turbulence effect simulator of the present invention.
In figure：1 black matrix, 11 ceramic layers, 12 middle layers, 13 cooling layers, 14 shells, 2 tank bodies, 3 stretching structures, 31 internal layers are stretched The draw, 32 insulating layers, 33 outer layer telescoping tubes, the 4 double-deck fans, 41 first fans, 42 second fans, 5 lids, 6 water tanks, 7 water pumps, 8 Optical imaging system, 81 light sources, 82 pin holes, 83 collimation lenses, 84 gratings, 85 object lens, 86 imaging sensors.
Specific implementation mode
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Specific embodiment one
The turbulence effect simulator of the present embodiment, structural schematic diagram are as shown in Figure 1.The turbulence effect simulator includes opening The tank body 2 downward in 1 upper opening of black matrix is arranged, by stretching between the opening and the opening of tank body 2 of black matrix 1 in upward black matrix 1 Shrinking structure 3 connects, and the stretching structure 3 is internally provided with the double-deck fan 4；
The black matrix 1 includes ceramic layer 11, middle layer 12, cooling layer 13 and shell 14 successively from inside to outside；The middle layer Resistance wire is provided among 12, inner wall is provided with temperature sensor, 13 water-filling of the cooling layer；The structural schematic diagram of black matrix 1 is such as Shown in Fig. 2；
2 top of the tank body is provided with opening, and lid 5 is provided in opening；
The stretching structure 3 includes internal layer telescoping tube 31, insulating layer 32 and outer layer telescoping tube 33, the internal layer successively from inside to outside Telescoping tube 31 includes the telescoping tube composition for being arranged at intermediate non-telescoping end and being connected to non-refreshing contracting end both ends, on non-refreshing contracting end Installation bilayer fan 4；The structural schematic diagram of stretching structure 3 is as shown in Figure 3；
The bilayer fan 4 includes the first fan 41 and the second fan 42 setting up and down, first fan, 41 and second wind The blade quantity of fan 42 is different, and rotating speed is different, turns to difference, each blade width in the first fan 41 and the second fan 42 is not Together.
Specific embodiment two
The vertical turbulence effect simulator of the present embodiment, on the basis of specific embodiment one, it further includes water to further limit Case 6 and water pump 7, for 13 top and bottom of the cooling layer respectively there are one outlet, the water in water tank 6 is pumped into cooling layer 13 by water pump 7 Outlet at bottom, water is from 13 top exit reflow tank of cooling layer, as shown in Figure 4.
This structure design had both realized the heat preservation to ceramic layer 11 and middle layer 12 using the slow thermal conductivity of water, it is ensured that The stability of the simulated turbulence effect of turbulence effect simulator, and realize the cooling to shell 14, it is ensured that experiment safety.
Specific embodiment three
The vertical turbulence effect simulator of the present embodiment, on the basis of specific embodiment one, further limiting the lid 5 is Stove circle structure, including multiple diameters it is different, be nested successively, the annular ring that section is hierarchic structure, as shown in figure 5, Fig. 5 displayings Be three annular rings it is superimposed and superposition after stove circle structure schematic diagram.
This structure design can realize the openings of sizes of adjustment lid 5, and then not by adjusting the quantity of annular ring Under the premise of changing other structures, parameter and technical indicator, change turbulence effect and simulate effect, and then increases turbulent flow effect of the present invention Answer the simulation context of simulator.
Specific embodiment four
The vertical turbulence effect simulator of the present embodiment further limits the tank body 2 on the basis of specific embodiment one For stretching structure.
This structure design can be realized by adjusting the length of tank body 2 and do not changing other structures, parameter and technology Under the premise of index, changes turbulence effect and simulate effect, and then increase the simulation context of turbulence effect simulator of the present invention.
In specific embodiment three and specific embodiment four, by change lid 5 openings of sizes or change tank body 2 length come It changes turbulence effect and simulate effect, and then increase the simulation context of turbulence effect simulator of the present invention, is carried out using air-flow Turbulence effect directly simulates the characteristic just having, which does not illustrate not only in the prior art, but also has exceeded ability The cognition of field technique personnel.
Specific embodiment five
The above vertical turbulence effect simulator further includes optical imaging system 8, and the optical imaging system is as shown in fig. 6, packet Include light source 81, pin hole 82, collimation lens 83, grating 84, object lens 85 and imaging sensor 86；The light beam that light source 81 is sent out passes through Pin hole 82 forms point light source, and collimated light beam is formed after being collimated using collimation lens 83, illuminates grating 84, the grating 84 and figure As sensor 86 is separately positioned on the object space and image space of object lens 85；Wherein, light source 81, pin hole 82, collimation lens 83 and grating 84 It is arranged inside black matrix 1, imaging sensor 86 is arranged inside tank body 2, and the setting of object lens 85 is inside 1 inside of black matrix or tank body 2.
This structure design can simulate effect to turbulent flow and be monitored, the image obtained using imaging sensor 86 into The calculating of 84 contrast of line raster decaying controls resistance wire according to result of calculation and adjusts the threshold value of temperature sensor, realizes whole System closed-loop control is covered, the accuracy for improving turbulence effect simulation is conducive to.
Specific embodiment six
The vertical turbulence effect simulator of the present embodiment further limits the grating on the basis of specific embodiment five 84 can where it 90 degree of plane internal rotation.
It has been investigated that carrying out the direct analog form of turbulence effect using air-flow and using between optical analog and algorithm simulation The essential distinction for connecing analog form is that air-flow the difference that optical analog and algorithm simulation can control can occur in two-dimensional directional Not, such difference using air-flow can not accurately control when turbulence effect is directly simulated, this characteristic is not only existing Do not illustrate in technology, and have exceeded the cognition of those skilled in the art, it is therefore necessary to which two-dimensional directional is all supervised It surveys.And this structure qualification of the present embodiment, it can realize the contrast changing rule for monitoring grating 84 in the two-dimensional direction, have Effect avoids single direction realization from simulating, and the problem that other direction is not up to standard, is conducive to the accuracy for improving turbulence effect simulation.
It should be noted that in the embodiment above, as long as reconcilable technical solution can carry out permutation and combination, this Field technology personnel can be possible to according to the mathematical knowledge limit of permutation and combination, and therefore, the present invention is no longer to permutation and combination Technical solution afterwards is illustrated one by one, but it is understood that presently disclosed for the technical solution after permutation and combination.

Claims (2)

1. turbulence effect simulator, which is characterized in that the black matrix including opening upwards（1）, it is arranged in black matrix（1）Upper opening Downward tank body（2）, black matrix（1）Opening and tank body（2）Opening between pass through stretching structure（3）Connection, the flexible knot Structure（3）It is internally provided with the double-deck fan（4）；
The black matrix（1）Include ceramic layer successively from inside to outside（11）, middle layer（12）, cooling layer（13）And shell（14）； The middle layer（12）Centre is provided with resistance wire, and inner wall is provided with temperature sensor, the cooling layer（13）Water-filling；
The tank body（2）Top is provided with opening, and lid is provided in opening（5）；
The stretching structure（3）Include internal layer telescoping tube successively from inside to outside（31）, insulating layer（32）With outer layer telescoping tube（33）, The internal layer telescoping tube（31）Telescoping tube composition including being arranged at intermediate non-telescoping end and being connected to non-refreshing contracting end both ends, The double-deck fan of installation on non-god's contracting end（4）；
The bilayer fan（4）Including the first fan setting up and down（41）With the second fan（42）, first fan（41） With the second fan（42）Blade quantity it is different, rotating speed is different, turns to different, the first fan（41）With the second fan（42）In Each blade width is different；
The lid（5）For stove circle structure, including multiple diameters it is different, be nested successively, the annular ring that section is hierarchic structure；
The tank body（2）For stretching structure.
2. vertical turbulence effect simulator according to claim 1, which is characterized in that the grating（84）It can be at it 90 degree of place plane internal rotation.
CN201810422330.8A 2016-10-08 2016-10-08 Turbulence effect simulator Pending CN108507755A (en)

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CN201810422330.8A Pending CN108507755A (en) 2016-10-08 2016-10-08 Turbulence effect simulator
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CN108827586A (en) 2018-11-16
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CN108387362A (en) 2018-08-10
CN106441796B (en) 2018-09-11

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