CN109430101B - Wind tunnel experiment system for researching migration habit of small birds or insects - Google Patents
Wind tunnel experiment system for researching migration habit of small birds or insects Download PDFInfo
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- CN109430101B CN109430101B CN201811251976.0A CN201811251976A CN109430101B CN 109430101 B CN109430101 B CN 109430101B CN 201811251976 A CN201811251976 A CN 201811251976A CN 109430101 B CN109430101 B CN 109430101B
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- 238000002474 experimental method Methods 0.000 title claims abstract description 25
- 238000013508 migration Methods 0.000 title claims abstract description 16
- 230000005012 migration Effects 0.000 title claims abstract description 16
- 241000238631 Hexapoda Species 0.000 title claims abstract description 12
- 238000004088 simulation Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims description 18
- 238000000917 particle-image velocimetry Methods 0.000 claims description 15
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 10
- 239000000700 radioactive tracer Substances 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 206010034719 Personality change Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000010359 Newcastle Disease Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004844 protein turnover Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K31/00—Housing birds
- A01K31/14—Nest-boxes, e.g. for singing birds or the like
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Birds (AREA)
- Animal Behavior & Ethology (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a wind tunnel experiment system for researching migration habits of small birds or insects, which comprises a backflow type low-speed wind tunnel body, a wind tunnel supporting device, a multifunctional environment simulation device and a performance parameter measuring device, wherein the backflow type low-speed wind tunnel body is a horizontally arranged annular artificial airflow pipeline; the invention provides a wind tunnel experimental device for researching migration performance of flying organisms such as birds or insects, which is used for carrying out aerodynamic force, non-contact flow field quantitative measurement and energy consumption and other characteristic parameter tests on flying organisms in wind tunnel artificial airflow; the device has the advantages of small occupied area, simple operation, scientific and convenient use, strong pertinence, low air flow turbulence, accurate adjustment of simulation conditions such as flow velocity, rainfall, light intensity and the like of an experimental section.
Description
Technical Field
The invention relates to a wind tunnel experiment system for researching migration habits of small birds or insects.
Background
The migration performance of birds or insects has important significance for researching morphology, metabolism and the like of flying organisms, and meanwhile, how to select an optimal flying scheme and strategy has strong guidance and inspiring effect on the design of the bionic micro-aircraft; currently scientists usually observe and analyze relevant performances under natural conditions by using instruments such as sensors placed on flying organisms, and although research in relevant directions is strongly promoted, the defects such as unrepeatable measurement, long-time measurement under specific natural conditions, incapability of placing large measuring instruments on the flying organisms and the like exist.
The wind tunnel is a wind tunnel laboratory, a relative motion principle is utilized to tie or freely hover a flying organism in an experimental section capable of generating controllable incoming wind speed, a high-speed camera recorder is further used for detailed flying attitude change, a particle image velocimetry technology is used for measuring flow field parameters, so that relevant flying performance parameters such as flying aerodynamic force, energy consumption and the like are obtained, and the method is further used for analyzing migration habit of the flying organism; the wind tunnel airflow is easy to control and operate, repeated blowing and repeated experiments can be carried out, the 'relatively static' flight is beneficial to data acquisition by using measurement equipment, and meanwhile, the corresponding influence rules can be researched by freely changing the external natural environment conditions such as humidity, illumination and the like in a stable section, and the characteristic changes such as energy consumption, protein turnover, water balance and the like generated in the migration flight process are developed.
In general, wind tunnels as experimental devices for bird or insect migration habit studies have the following advantages: (1) The air flow is convenient to control and operate, and the flying organism is relatively static so as to be convenient for carrying out fine measurement; (2) repeated experiments can be performed; (3) Compared with the field measurement, the experimental cost is low and is not influenced by natural environment; (4) it is convenient to artificially raise the flying organism indoors.
Disclosure of Invention
The invention aims to provide a wind tunnel experiment system which provides artificial airflow and environments with various different natural conditions for flight biological migration flight performance researches of small birds or insects, wherein the airflow angle can be adjusted along with the actual flight attack angle of the flight organisms, and the wind tunnel experiment system has the advantages of strong pertinence, wide application range and simple and convenient operation and is suitable for environment simulation tests with different conditions.
All birds or insects that can fly in the experimental section of the present invention are "small", for example, the experimental section may be set to 0.5m×0.5m×1.8m in size.
In order to solve the technical problems, the following technical scheme is adopted: the wind tunnel experiment system for researching migration habits of small birds or insects comprises a reflux type low-speed wind tunnel body, a wind tunnel supporting device, a multifunctional environment simulation device and a performance parameter measuring device, wherein the reflux type low-speed wind tunnel body is a horizontally arranged annular artificial airflow pipeline and comprises a stabilizing section, a contracting section, an experiment section, a first diffusion section, a first corner, a second diffusion section, a second corner, a switching section, a power section, a third diffusion section, a third corner, a circulation section and a fourth corner which are sequentially connected end to end; the backflow type low-speed wind tunnel body is arranged on the wind tunnel supporting device, and the wind tunnel supporting device is used for changing the inclination angle between the axis plane of the backflow type low-speed wind tunnel and the horizontal direction and consists of a base and a tilting platform; the middle part of the tilting platform is hinged to the base, and one end of the tilting platform is connected with the hydraulic lifting device; an angle instrument is fixed on the tilting platform;
the multifunctional environment simulation device is positioned at the experimental section and at least comprises one of a rain simulation device, a light intensity adjustable irradiation device and a feeding device, wherein the rain simulation device simulates and generates different rainfall, and the light intensity adjustable irradiation device simulates and generates different light intensities; the feeding device is used for feeding the flying organisms in an injection way;
the uniform artificial air flow in the reflux type low-speed wind tunnel is generated by a fan arranged in the power section; a honeycomb device and a damping net are arranged in the stabilizing section, and a group of guide vanes are arranged in each of the first corner, the second corner, the third corner and the fourth corner;
the performance parameter measuring device consists of a high-speed camera image acquisition system and a Particle Image Velocimetry (PIV); the high-speed camera image acquisition system comprises two high-speed cameras which are positioned in an experimental section and at different positions, and two flight attitude videos with different angles are shot; the particle image velocimetry system is used for obtaining a velocity field distribution of the experimental section.
Further, the rain device comprises a water tank, a water pump, a swinging pipe and a spray head which are connected in sequence;
further, the adjustable light intensity irradiation device is a solid-state light source LED lamp;
further, the feeding device consists of a feeding probe and a foodstuff filling device;
further, the fan comprises a variable frequency motor and a fan;
further, a total pressure pipe and a static pressure pipe are respectively arranged at the outlet of the stabilizing section and the inlet of the experimental section, and are connected with a barometer to respectively measure the total pressure and the static pressure of the air flow.
Further, a distribution outlet of the trace particle distribution device of the particle image velocimetry system is positioned at a stable section, and trace particles are uniformly distributed; the laser of the particle image velocimetry system generates a sheet light source which is perpendicular to the wind tunnel axis of the experimental section and translates along the wind tunnel axis in the experimental section; the frame-crossing camera and the film light source synchronously move, and a frame-crossing image is recorded.
Due to the adoption of the technical scheme, the method has the following beneficial effects:
(1) The wind tunnel experimental system provides artificial airflow and environments with various natural conditions for the flight biological migration flight performance study of small birds or insects, the airflow angle can be adjusted along with the actual flight attack angle of the flight organisms, and the wind tunnel experimental system has strong pertinence, wide application range and simple and convenient operation and is suitable for environmental simulation test under different conditions;
(2) The air flow speed and the turbulence of the reflux type low-speed wind tunnel device can be adjusted, so that the flight speed simulation requirements of various flying organisms are met; the wind tunnel can be continuously opened, so that the simulation requirement of long-distance migration time is met; the inclination platform is adjusted, so that the inclination angles of the wind tunnel axis and the horizontal direction can be changed in real time, and the air flow environment conditions with different attack angles can be simulated; the measurement simulation requirement of performance parameters in the process of climbing or diving of the flying organism can be met;
(3) Natural environments with different rainfall and different light intensity can be simulated and generated by adjusting parameter setting of the multifunctional environment simulation device; the feeding system can feed for flying organisms which continuously fly, so that the research on the characteristics of newcastle disease, energy conversion and the like is carried out;
(4) Through the arrangement of the performance parameter measurement system, the particle image velocimetry system is utilized to carry out flight biological aerodynamic force and energy conversion measurement, and the high-speed camera system is utilized to carry out flight biological attitude change measurement research; the combination of the two can develop the research of flight biological flight characteristics, metabolism and other migration habits, promote the exploration and cognition of ecology of flight organisms and a flight biological high-lift flight mechanism, and provide a new thought for the research and development of novel aircrafts in engineering;
drawings
FIG. 1 is a top view of a back-flow low speed wind tunnel;
FIG. 2 is a side view of a back-flow low speed wind tunnel;
FIG. 3 is a schematic diagram of a multi-functional environmental simulation device;
FIG. 4 is a schematic diagram of a performance parameter measurement system;
in the figure: 1-a reflux type low-speed wind tunnel body; 2-cellular; 3-a damping net; 4-a stabilizing section; 5-a shrink section; 6-a solid-state light source LED lamp; 7-a rain simulation device; 8-experimental section; 9-a first diffusion section; 10-a first corner; 11-a first baffle; 12-a second diffusion section; 13-a second corner; 14-a second deflector; 15-an adapter section; 16-a power section; 17-motor cover; 18-a third diffusion section; 19-a third corner; 20-a third deflector; 21-a flow-through section; 22-fourth corner; 23-fourth guide vane; 24-tilting platform support; 25-tilting platform; 26-an angle device; 27-a tilting drive motor; 28-total pressure pipe; 29-static pressure tube; 30-feeding probe; 31-a water tank; 32-a water pump; 33-swinging pipes; 34-spray head; 35-a high speed camera; 36-a laser; 37-a frame-spanning camera; 38-a data acquisition and control system; 39-tracer particle dispensing apparatus.
Detailed Description
The wind tunnel experimental equipment for generating artificial airflow comprises a backflow type low-speed wind tunnel body 1, wherein the backflow type low-speed wind tunnel body 1 is an annular artificial airflow pipeline which is horizontally arranged, the backflow type low-speed wind tunnel body comprises a honeycomb device 2, a damping net 3, a stabilizing section 4, a contraction section 5, an experimental section 8, a first diffusion section 9, a first corner 10, a second diffusion section 12, a second corner 13, a switching section 15, a power section 16, a third diffusion section 18, a third corner 19, a circulation section 21 and a fourth corner 22 which are sequentially connected end to end, and the tunnel body is integrally supported on a wind tunnel supporting device;
the artificial air flow in the wind tunnel body 1 is generated by a fan (a variable frequency motor drives a fan) in the power section 16, the air flow passes through the third diffusion section 18, the third corner 19 and the circulation section 21, the air flow enters the stabilizing section 4 after passing through the contraction section 5, the air flow is accelerated to a set air speed and enters the experiment section 8 after passing through the contraction section 5, the air flow in the experiment section 8 is uniform, flying organisms are placed in the experiment section 8, then the air flow is decelerated and pressurized, passes through the first diffusion section 9, the first corner 10, the second diffusion section 12 and the second corner 13, the switching section 15 and the air flow is driven by the fan to increase the total pressure after entering the power section 16, and then the air flow enters the stabilizing section 4, and the air flow can be rectified again through a honeycomb network and a damping network; the guide vanes 11, 14, 20 and 23 are arranged at the four corners of the wind tunnel body, so that the air flow can pass through better, the energy loss of the air flow flowing in the wind tunnel is reduced, and the test requirements of various different conditions are met;
the multifunctional environment simulation device is arranged at an experimental section and consists of a rain simulation device 7, a tunable light intensity irradiation device and a feeding device, wherein the rain simulation device generates rainfall with the pressure of 100-150kpa, the flow of 100+/-1L/min and the maximum duration of 1000min, natural environments with different rainfall are simulated and generated, and the rainfall range is 0-10 mm/h; the adjustable light intensity irradiation device is characterized in that a 300W silica gel is used for packaging a solid-state light source LED lamp 6, natural environments with different light intensities are simulated and generated, and the light intensity range is 0-500 lx; the feeding device consists of a feeding probe 30 and a foodstuff injector, and is used for continuously feeding flying organisms in long-distance (long-time) migration flight simulation experiments, and different flying organisms adopt corresponding foodstuff types;
the performance parameter measuring device consists of a high-speed camera image acquisition system and a Particle Image Velocimetry (PIV), wherein the high-speed camera image acquisition system comprises two high-speed cameras 35 which are positioned in an experimental section 8 and positioned at different positions, and two flight attitude videos with different angles are shot. The flight attitude videos can be used for further scientific research, for example, acquired videos are synthesized through video processing software of a processor to obtain the motion attitude change rules of the flight biological wings and bodies;
the particle image velocimetry system is used for obtaining velocity field distribution of an experimental section and generally comprises a laser 36, a cross-frame camera 37 and a tracer particle scattering system 39, wherein a scattering outlet of the tracer particle scattering device 39 is positioned at the stable section 4, and tracer particles are uniformly scattered; the laser 36 generates a light source with a wavelength of 532nm, which is perpendicular to the wind tunnel axis of the experimental section 8, and moves along the wind tunnel axis in the experimental section 8; the frame-crossing camera 37 moves synchronously with the sheet light source and records frame-crossing images; in the figure, a control system 38 is adopted to realize synchronous triggering of a cross-frame camera 37 and a sheet light source, and the speed field distribution is obtained through processing;
the velocity field distribution is combined with the motion gesture change rule, so that aerodynamic force and energy dissipation results received by a flight biological individual in the flight process can be further analyzed and obtained;
the specific working process of the wind tunnel system comprises the following steps:
an opening device; the fan in the power section 16 is started, the air flow starts to flow through fan boosting (the frequency of the variable frequency motor can be adjusted to change the rotating speed of the fan so as to adjust the flow speed of the air flow), enters a third corner 19 through a third diffusion section 18, is turned around for the first time under the directional action of a third guide vane 20, enters a first corner 22 through a circulation section 21, enters a stabilizing section 4 under the directional action of a first guide vane 23, and obtains uniform air flow with lower turbulence in an experiment section 8 after being adjusted by a honeycomb 2, a damping net 3, the stabilizing section 4 and a contraction section 5; the flying organism is relatively static in the experimental section 8 and can be tethered or supported by rods or fly freely, and after that, the air flow passes through the second corner 10, the second diffusion section 12 and the fourth corner 13 along the first diffusion section 9 and then returns to the power section 16; the outlet of the stabilizing section 4 and the inlet of the experimental section 8 are respectively provided with a total pressure pipe 28 and a static pressure pipe 29, and the total pressure and the static pressure of the air flow are respectively measured by being connected with a barometer, so that the air flow velocity of the experimental section is measured;
the wind tunnel body 1 is arranged on a wind tunnel supporting device, and the wind tunnel supporting device is used for changing the inclination angle between the wind tunnel axis plane and the horizontal direction and consists of a base and a tilting platform; the middle part of the tilting platform is hinged to the base, and one end of the tilting platform is connected with the hydraulic lifting device; an angle instrument is fixed on the tilting platform; the inclination platform is adjusted, so that the inclination angles of the wind tunnel axis and the horizontal direction can be changed in real time, and the air flow environment conditions with different attack angles can be simulated; the inclination angle change range is-8 degrees to 8 degrees, the angle adjustment speed is 30 degrees/min, and the measurement simulation requirement of the performance parameters in the process of climbing or diving of the flying organism is met; the tilting angle of the tilting platform is read by the angle gauge 26;
the multifunctional simulation device at the experimental section comprises a solid-state light source LED lamp 6 and a rain simulation device 7, as shown in figure 2; a feeding probe 30 is located at the experimental section for injecting a fluid diet into the flying organism; starting a rain spraying device, wherein the pressure of the rain spraying device is 100-150kpa, the maximum flow rate can reach 100+/-1L/min, the maximum duration is 1000min, simulated rainwater is extracted from a water tank 31 by a water pump 32 and sprayed out by a spray head 34 through a swinging pipe 33, the current of the water pump is changed, the water spraying amount is regulated, and the rainfall range is 0-10 mm/h; starting a solid-state light source LED lamp 6, adjusting different illumination intensities, simulating natural light irradiation environment, and adjusting the light intensity within the range of 0-500 lx;
starting a performance parameter measurement system; firstly, starting a high-speed camera 35, collecting a flight video of a shooting flying organism after focusing, wherein the collecting frequency is 1000Hz at most; further carrying out particle image velocimetry experiments; turning on the laser 36 and adjusting the frame crossing camera 37; the control system 38 is operated, and then the tracer particle scattering device 39 is started, so that the speed distribution of the space flow field to be detected is measured, and the speed field distribution is further obtained. When the air flow environment conditions with different attack angles are required to be simulated, the hydraulic lifting device is regulated, so that the tilting platform is tilted by a certain angle.
Claims (7)
1. A wind tunnel experiment system for researching migration habits of small birds or insects is characterized in that: the wind tunnel experiment system comprises a reflux type low-speed wind tunnel body (1), a wind tunnel supporting device, a multifunctional environment simulation device and a performance parameter measurement device, wherein the reflux type low-speed wind tunnel body (1) is an annular artificial airflow pipeline which is horizontally arranged, and comprises a stabilizing section (4), a contracting section (5), an experiment section (8), a first diffusion section (9), a first corner (10), a second diffusion section (12), a second corner (13), a switching section (15), a power section (16), a third diffusion section (18), a third corner (19), a circulation section (21) and a fourth corner (22) which are sequentially connected end to end; the backflow type low-speed wind tunnel body (1) is arranged on the wind tunnel supporting device, the wind tunnel supporting device is used for changing the inclination angle between the axis plane of the backflow type low-speed wind tunnel body (1) and the horizontal direction, and the wind tunnel supporting device consists of a base and a tilting platform; the middle part of the tilting platform is hinged to the base, and one end of the tilting platform is connected with the hydraulic lifting device; an angle instrument is fixed on the tilting platform;
the multifunctional environment simulation device is positioned at the experimental section and at least comprises one of a rain simulation device, a light intensity adjustable irradiation device and a feeding device, wherein the rain simulation device simulates and generates different rainfall, and the light intensity adjustable irradiation device simulates and generates different light intensities; the feeding device is used for feeding the flying organisms in an injection way;
the uniform artificial air flow in the reflux type low-speed wind tunnel body (1) is generated by a fan arranged in the power section (16); a honeycomb device (2) and a damping net (3) are arranged in the stabilizing section (4), and a group of guide vanes are arranged in each of the first corner, the second corner, the third corner and the fourth corner;
the performance parameter measuring device consists of a high-speed camera image acquisition system and a particle image velocimetry system; the high-speed camera image acquisition system comprises two high-speed cameras (35) which are positioned in the experimental section (8) and positioned at different positions, and two flight attitude videos with different angles are shot; the particle image velocimetry system is used for obtaining a velocity field distribution of the experimental section.
2. Wind tunnel experiment system according to claim 1, characterized in that the rain device comprises a water tank (31), a water pump (32), a swinging pipe (33) and a spray head (34) which are connected in sequence.
3. Wind tunnel experiment system according to claim 1, characterized in that the adjustable light intensity irradiation means is a solid state light source LED lamp (6).
4. Wind tunnel experiment system according to claim 1, characterized in that the feeding device consists of a feeding probe (30) and a foodstuff injector.
5. The wind tunnel experiment system of claim 1, wherein the fan comprises a variable frequency motor and a fan.
6. Wind tunnel experiment system according to claim 1, characterized in that a total pressure pipe (28) and a static pressure pipe (29) are respectively arranged at the outlet of the stabilizing section (4) and the inlet of the experiment section (8), and the total pressure pipe (28) and the static pressure pipe (29) are connected with a barometer to respectively measure the total pressure and the static pressure of air flow.
7. Wind tunnel experiment system according to claim 1, characterized in that the particle image velocimetry system comprises a laser (36), a frame-spanning camera (37) and a tracer particle scattering device (39), the scattering outlet of the tracer particle scattering device (39) being located in the stabilizing section (4) for uniformly scattering the tracer particles; a laser (36) of the particle image velocimetry system generates a sheet light source which is perpendicular to the wind tunnel axis of the experimental section (8) and translates along the wind tunnel axis in the experimental section (8); a frame-crossing camera (37) moves in synchronization with the sheet light source, and a frame-crossing image is recorded.
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| EP3747264A1 (en) * | 2019-06-03 | 2020-12-09 | Bühler Insect Technology Solutions AG | Climate system |
| CN114608792B (en) * | 2022-05-10 | 2022-07-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for measuring uniform region of sub-transonic jet flow field of high-speed jet wind tunnel by short-shaft probe |
| CN115997736B (en) * | 2023-03-28 | 2023-05-30 | 绵阳师范学院 | Flying speed testing equipment for insects |
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| CN201340333Y (en) * | 2008-12-31 | 2009-11-04 | 浙江理工大学 | Return flow tunnel testing device |
| CN103630323A (en) * | 2013-05-22 | 2014-03-12 | 河南科技学院 | Digitized wheat lodging-resistant experiment wind tunnel |
| CN106857319A (en) * | 2017-03-06 | 2017-06-20 | 四川农业大学 | Queen bee mating system |
| CN107258695A (en) * | 2017-07-05 | 2017-10-20 | 西北农林科技大学 | It is a kind of to be used for the wind-tunnel of small insects behavior and ecological experimental study |
| CN209594521U (en) * | 2018-10-25 | 2019-11-08 | 浙江大学 | A kind of small birds or insect migrate the wind tunnel experiment system of behavioral study |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201340333Y (en) * | 2008-12-31 | 2009-11-04 | 浙江理工大学 | Return flow tunnel testing device |
| CN103630323A (en) * | 2013-05-22 | 2014-03-12 | 河南科技学院 | Digitized wheat lodging-resistant experiment wind tunnel |
| CN106857319A (en) * | 2017-03-06 | 2017-06-20 | 四川农业大学 | Queen bee mating system |
| CN107258695A (en) * | 2017-07-05 | 2017-10-20 | 西北农林科技大学 | It is a kind of to be used for the wind-tunnel of small insects behavior and ecological experimental study |
| CN209594521U (en) * | 2018-10-25 | 2019-11-08 | 浙江大学 | A kind of small birds or insect migrate the wind tunnel experiment system of behavioral study |
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