CN111190025A - Comprehensive gas-liquid two-phase flow test experimental device - Google Patents
Comprehensive gas-liquid two-phase flow test experimental device Download PDFInfo
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- CN111190025A CN111190025A CN202010020338.9A CN202010020338A CN111190025A CN 111190025 A CN111190025 A CN 111190025A CN 202010020338 A CN202010020338 A CN 202010020338A CN 111190025 A CN111190025 A CN 111190025A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
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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
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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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
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention provides a comprehensive gas-liquid two-phase flow test experimental device. Including wind-tunnel and circulating water tank, the wind-tunnel is arranged circulating water tank's top, arrange PIV tracer particle in the wind-tunnel in proper order and scatter device, fan, wind-tunnel honeycomb ware and damping net, set up particle generator and controller before PIV tracer particle scatters the device, lay basin honeycomb ware and paddle in the circulating water tank, the motor is connected to the paddle, sets up laser instrument and camera in the side of wind-tunnel and circulating water tank. The invention combines the PIV testing technology with the circulating water tank test and the wind tunnel test, solves the problem of the dispersion of PIV tracer particles in the wind tunnel, and can effectively capture the flow characteristics of an air flow field, a water flow field and a gas-liquid two-phase flow interface under the condition of not disturbing the flow field. The invention can capture the flow field information of a water flow field, an air flow field and a gas-liquid interface by adjusting the camera and the laser, and can also be applied to the test of a common wind tunnel and a common circulating water tank.
Description
Technical Field
The invention relates to a wind tunnel and water tunnel experimental device, in particular to a comprehensive gas-liquid two-phase flow test experimental device which can obtain flow field information by applying a PIV test technology.
Background
The gas-liquid two-phase flow is a problem which is usually encountered in water conservancy, energy, chemical engineering and environment, and the effect of the gas-liquid two-phase flow in some engineering applications depends on the motion form and distribution of bubbles to a great extent. The flow structure of the gas phase and the liquid phase is various and random. Therefore, it is quite difficult to describe the flow condition of the gas-liquid two-phase fluid comprehensively and accurately. In the past experimental research, methods such as a hot-wire thermal film anemometer (HWFA) and a Laser Doppler Velocimeter (LDV) are generally adopted, but these methods have the disadvantage that only spatial single-point information can be obtained, and in 2000, gruneld and Finke et al, in combination with the PIV and laser-induced screen testing technology, explore the simultaneous measurement of the velocity field of each dispersed phase of a turbulent gas-liquid two-phase flow in a sheet device. The result shows that the PIV technology can be used for measuring the gas-liquid phase velocity field, the precision is very high, and the error is less than 2 percent and is lower than the standard by 6 to 7 percent. And the PIV can obtain the transient full flow field flow condition. Therefore, the research on the gas-liquid two-phase flow characteristics by adopting the PIV testing technology not only has certain academic value, but also has practical engineering significance.
The wind tunnel test can be applied to the development of aircrafts and the coupling research of air flow fields of aircrafts and ship surfaces of ships and warships. Due to the induction effect of the protruding structures on the surface of the ship, the surface flow field of the ship is very complex. Therefore, the method is of great importance for experimental research of the ship surface air flow field. The circulating water tank is an experimental device for fixing an object to be measured and measuring hydrodynamic properties of the object by utilizing the relative flow of circulating water flow. In the circulating water tank, an object to be measured is fixed on a measuring part, water flow is pushed by a water pump to flow in the circulating water tank in a circulating mode, the water flow speed can be changed by adjusting the rotating speed of the water pump, and therefore relative motion between the object and the water flow is formed, and hydrodynamic performance of the object is measured.
However, the existing wind tunnel and circulating water tank experimental devices only measure the air flow field under one medium singly.
Disclosure of Invention
The invention aims to provide a comprehensive gas-liquid two-phase flow testing experimental device which can effectively capture the flow characteristics of an air flow field, a water flow field and a gas-liquid two-phase flow interface under the condition of not disturbing the flow field.
The purpose of the invention is realized as follows:
including wind-tunnel and circulating water tank, the wind-tunnel is arranged circulating water tank's top, arrange PIV tracer particle in the wind-tunnel in proper order and scatter device, fan, wind-tunnel honeycomb ware and damping net, set up particle generator and controller before PIV tracer particle scatters the device, lay basin honeycomb ware and paddle in the circulating water tank, the motor is connected to the paddle, sets up laser instrument and camera in the side of wind-tunnel and circulating water tank.
The present invention may further comprise:
1. and arranging model supports in the test sections of the wind tunnel and the circulating water tank.
2. The PIV tracer particle scattering device is composed of a plurality of resin thin tubes.
3. The fan outlet is provided with an anti-separation net.
In order to combine the wind tunnel test with the circulating water tank test and apply the PIV test technology to measure the water flow field and the air flow field. The invention provides a comprehensive gas-liquid two-phase flow test experimental device capable of applying PIV test technology, which can flexibly change the section to be tested by uniformly scattering trace particles, can capture the flow characteristics of an air flow field and a water flow field under the same working condition, and can obtain a relatively ideal flow field vector distribution diagram through PIV image post-processing, thereby obtaining complete flow field information to be tested.
The combination of the circulating water channel and the backflow type wind tunnel is also a combination of a PIV testing technology, a circulating water channel and a wind tunnel test, can better capture the flow characteristic of a fine flow field, and has great significance for the research of aircrafts, the performance research of propellers, the research of hydrodynamic performance of underwater aircrafts, the research of the air flow field characteristic of warships and warships surfaces and the like.
The invention discloses a comprehensive gas-liquid two-phase flow test experimental device capable of applying PIV test technology, which comprises a controller, a motor, a smoke generator, a PIV tracer particle distribution device, a fan, a separation prevention net, a honeycomb device, a damping net, a model bracket, a laser, a high-speed camera and other main components. After directly scattering tracer particles in the circulating water tank, the controller enables the smoke generator, the circulating water tank and the wind tunnel to start working, the tracer particles in the wind tunnel enter the wind tunnel through the scattering device, the anti-separation net, the honeycomb device and the damping net are used for rectifying, straightening and stabilizing the airflow, the model support is arranged in the test section of the wind tunnel and the circulating water tank, the model support can be used for fixing a model and adjusting the model angle to test, and meanwhile, the detachable high-speed camera is arranged in the test section and used for PIV testing. The laser provides a sheet light source outside the experimental apparatus to illuminate the tracer particles for the experiment.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic plan view of the present invention.
Detailed Description
The invention is described in more detail below by way of example.
With reference to fig. 1 and 2, the comprehensive gas-liquid two-phase flow testing experimental device comprises a wind tunnel and a circulating water tank, wherein the wind tunnel is arranged above the circulating water tank, a PIV tracer particle distribution device 3, a fan 4, a separation prevention net, a wind tunnel honeycomb device 5 and a damping net 6 are sequentially arranged in the wind tunnel, a particle generator 2 and a controller 1 are arranged in front of the PIV tracer particle distribution device, a water tank honeycomb device 10 and blades 8 are arranged in the circulating water tank, the blades are connected with a motor 9, and a laser 12 and a camera 11 are arranged on the side surfaces of the wind tunnel and the circulating water tank. And a model bracket 7 is arranged at the test section of the wind tunnel and the circulating water tank. The PIV tracer particle distribution device is composed of a plurality of resin thin pipes.
Controller 1 control smog particle generator 2 and fan 4 in upper wind-tunnel, the tracer particle spills device 3 through the leading-in tracer particle of airtight pipeline, and the tracer particle gets into the test section through honeycomb ware 5 and damping net 6 and carries out PIV measurement test, accessible model support 7 fixed model. In the circulation water tank, the blades 8 are rotated by the motor 9 to operate the circulation water tank, and the circulation water is rectified by the honeycomb device 12. During the test, images are collected by a high-speed camera 11 and a laser 10 is used for providing a sheet light source.
The tracer particle distribution concentration and flow suitable for PIV image processing under different airflow flows are obtained by adjusting the flow value of an airflow flowmeter injected into the smoke generator.
The dispersing device for the PIV tracer particles is composed of a plurality of resin thin tubes, and the dispersing device can uniformly disperse the tracer particles as much as possible under the condition that a flow field is not disturbed.
The anti-separation net, the honeycomb device and the damping net can rectify, guide and stabilize the airflow as much as possible.
The model support can measure the air flow fields of different sections of the model to be tested at the test section, so that the test is more flexible and complete.
The flow field information of an air flow field, a water flow field and a gas-liquid interface can be captured by the adjustable high-speed camera and the position of the laser in the test section, so that the data obtained in the test is more complete.
The whole experimental device can also be applied to conventional wind tunnel experiments and water tunnel experiments.
The invention has simple processing and manufacturing process and simple and convenient operation. The PIV testing technology is combined with a circulating water tank test and a wind tunnel test, the problem of dispersion of PIV tracer particles in a wind tunnel is solved, and the flow characteristics of an air flow field, a water flow field and a gas-liquid two-phase flow interface can be effectively captured under the condition of not disturbing the flow field. The invention can capture the flow field information of a water flow field, an air flow field and a gas-liquid interface by adjusting the high-speed camera and the laser, and can also be applied to the test of a common wind tunnel and a common circulating water tank.
Claims (5)
1. A comprehensive gas-liquid two-phase flow test experimental device is characterized in that: including wind-tunnel and circulating water tank, the wind-tunnel is arranged circulating water tank's top, arrange PIV tracer particle in the wind-tunnel in proper order and scatter device, fan, wind-tunnel honeycomb ware and damping net, set up particle generator and controller before PIV tracer particle scatters the device, lay basin honeycomb ware and paddle in the circulating water tank, the motor is connected to the paddle, sets up laser instrument and camera in the side of wind-tunnel and circulating water tank.
2. The integrated gas-liquid two-phase flow test experimental device according to claim 1, characterized in that: and arranging model supports in the test sections of the wind tunnel and the circulating water tank.
3. The integrated gas-liquid two-phase flow test experimental device according to claim 1 or 2, characterized in that: the PIV tracer particle scattering device is composed of a plurality of resin thin tubes.
4. The integrated gas-liquid two-phase flow test experimental device according to claim 1 or 2, characterized in that: the fan outlet is provided with an anti-separation net.
5. The integrated gas-liquid two-phase flow test experimental device according to claim 3, wherein: the fan outlet is provided with an anti-separation net.
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| CN202010020338.9A CN111190025A (en) | 2020-01-09 | 2020-01-09 | Comprehensive gas-liquid two-phase flow test experimental device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504601A (en) * | 2020-05-25 | 2020-08-07 | 天津科技大学 | Adjustable fluid uniform flow experiment platform |
| CN111896772A (en) * | 2020-08-28 | 2020-11-06 | 广东省航空航天装备技术研究所 | Particle imaging speed measurement system applied to wind tunnel |
| CN112179611A (en) * | 2020-09-30 | 2021-01-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Device for generating large-scale high-speed wind tunnel PIV tracer particles and remotely controlling flow |
| CN112197934A (en) * | 2020-09-30 | 2021-01-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Tracer particle concentration control method for large-scale high-speed wind tunnel PIV test |
| CN112581848A (en) * | 2020-12-11 | 2021-03-30 | 中国建筑科学研究院有限公司 | Tunnel fire smoke motion measurement simulation test system |
| CN113358328A (en) * | 2021-06-16 | 2021-09-07 | 中国科学院力学研究所 | Realize controllable circulating water tank experimental apparatus of solution saturation |
| CN114577437A (en) * | 2022-02-15 | 2022-06-03 | 哈尔滨工程大学 | Gas-liquid two-phase flow bubble measuring device |
| CN117554022A (en) * | 2023-05-11 | 2024-02-13 | 中国空气动力研究与发展中心低速空气动力研究所 | A water wind tunnel for surface of water aircraft experimental study |
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| CN104729823A (en) * | 2015-04-09 | 2015-06-24 | 中国科学院电工研究所 | Sand wind two-phase flow experiment device for buildings and building wind sand experiments |
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| CN110456100A (en) * | 2019-07-31 | 2019-11-15 | 西安航天动力试验技术研究所 | A kind of velocity field parameter test method of hypersonic aircraft experimental flow field |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504601A (en) * | 2020-05-25 | 2020-08-07 | 天津科技大学 | Adjustable fluid uniform flow experiment platform |
| CN111896772A (en) * | 2020-08-28 | 2020-11-06 | 广东省航空航天装备技术研究所 | Particle imaging speed measurement system applied to wind tunnel |
| CN112179611A (en) * | 2020-09-30 | 2021-01-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Device for generating large-scale high-speed wind tunnel PIV tracer particles and remotely controlling flow |
| CN112197934A (en) * | 2020-09-30 | 2021-01-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Tracer particle concentration control method for large-scale high-speed wind tunnel PIV test |
| CN112179611B (en) * | 2020-09-30 | 2022-05-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Device for generating large-scale high-speed wind tunnel PIV tracer particles and remotely controlling flow |
| CN112581848A (en) * | 2020-12-11 | 2021-03-30 | 中国建筑科学研究院有限公司 | Tunnel fire smoke motion measurement simulation test system |
| CN113358328A (en) * | 2021-06-16 | 2021-09-07 | 中国科学院力学研究所 | Realize controllable circulating water tank experimental apparatus of solution saturation |
| CN114577437A (en) * | 2022-02-15 | 2022-06-03 | 哈尔滨工程大学 | Gas-liquid two-phase flow bubble measuring device |
| CN117554022A (en) * | 2023-05-11 | 2024-02-13 | 中国空气动力研究与发展中心低速空气动力研究所 | A water wind tunnel for surface of water aircraft experimental study |
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Application publication date: 20200522 |
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