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Wind tunnel complex flowing color fluorescence oil flow test method

A test method and technology of flowing oil, applied in the field of oil flow test, can solve the problems of complex wind tunnel and so on

Active Publication Date: 2020-12-01
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a test method for complex flow colored fluorescent oil flow in a wind tunnel, aiming to solve the above-mentioned problems existing in the test method for complex flow colored fluorescent oil flow in a wind tunnel in the prior art

Method used

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  • Wind tunnel complex flowing color fluorescence oil flow test method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A wind tunnel complex flow color fluorescent oil flow test method is used to test the complex flow color fluorescent oil flow test in a wind tunnel whose Ma number is 5, comprising the following steps:

[0056] 1. Mix 30 parts by mass of silicone oil and 32 parts by mass of white oil to form a blended oil, add 38 parts by mass of tracer particles to the blended oil, and finally add 2 g of oleic acid to every 50 grams of mixed oil to carry out anti-corrosion. The coagulant is added to form a mixed oil agent for the complex flow oil flow test in the wind tunnel.

[0057] 2. Clean the test model, install the test model in the test wind tunnel, install and adjust the light source system and the map recording system.

[0058] 3. Apply the mixed oil agent for the complex flow oil flow test in the wind tunnel to the surface of the test model to form an oil layer. Set the test Ma number to 5, the initial model attitude angle required for the test and the blowing time of 33 seco...

Embodiment 2

[0062] A wind tunnel complex flow color fluorescent oil flow test method is used to test the complex flow color fluorescent oil flow test in a wind tunnel whose Ma number is 6, comprising the following steps:

[0063] 1. Proportion 33 parts by mass of silicone oil and 30 parts by mass of white oil to form a blended oil, add 37 parts by mass of tracer particles to the blended oil, and finally add 2 g of oleic acid to every 50 grams of mixed oil to carry out anti-corrosion. The coagulant is added to form a mixed oil agent for the complex flow oil flow test in the wind tunnel.

[0064] 2. Clean the test model, install the test model in the test wind tunnel, install and adjust the light source system and the map recording system.

[0065] 3. Apply the mixed oil agent for the complex flow oil flow test in the wind tunnel to the surface of the test model to form an oil layer, set the test Ma number to 6, the initial model attitude angle required for the test and the blowing time of ...

Embodiment 3

[0069] A wind tunnel complex flow color fluorescent oil flow test method is used to test the complex flow color fluorescent oil flow test in a wind tunnel whose Ma number is 7, comprising the following steps:

[0070] 1. Proportion 34 parts by mass of silicone oil and 29 parts by mass of white oil to form a blended oil, add 37 parts by mass of tracer particles to the blended oil, and finally add 2 g of oleic acid to every 50 grams of mixed oil to carry out anti-corrosion. The coagulant is added to form a mixed oil agent for the complex flow oil flow test in the wind tunnel.

[0071] 2. Clean the test model, install the test model in the test wind tunnel, install and adjust the light source system and the map recording system.

[0072] 3. Apply the mixed oil agent for the complex flow oil flow test in the wind tunnel to the surface of the test model to form an oil layer, set the test Ma number to 7, the initial model attitude angle required for the test and the blowing time of ...

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Abstract

The invention provides a wind tunnel complex flowing color fluorescence oil flow test method, which belongs to the field of oil flow tests, and comprises the steps of: preparing a wind tunnel complexflowing oil flow test mixed oil agent, wherein the wind tunnel complex flowing oil flow test mixed oil agent comprises a blend oil agent, tracer particles and an anticoagulant, the viscosity of the blend oil agent is 200-300 mPa.s, and the tracer particles comprise titanium dioxide and a fluorescence indicator; cleaning a test model, installing the test model in a test wind tunnel, and installingother test equipment; arranging the wind tunnel complex flowing oil flow test mixed oil agent on the surface of the test model to form an oil agent layer, setting a test Ma number, a model attitude angle and blowing time, starting the test wind tunnel, and acquiring a transient oil flow map; and stopping the test wind tunnel, and shooting a static oil flow map. The wind tunnel complex flowing color fluorescence oil flow test method is suitable for the wind tunnel complex flowing color fluorescence oil flow test with the test Ma number reaching 5 or above, and carries out quantification and standardization on the mode, based on experience, of oil agent configuration and operation of the wind tunnel complex flowing color fluorescence oil flow test.

Description

technical field [0001] The invention relates to the field of oil flow tests, in particular to a method for testing complex flow colored fluorescent oil in a wind tunnel. Background technique [0002] Surface flow display is an important fluid mechanics test technique for studying complex flows and revealing boundary layer separation and vortex structure. Oil flow test technology is one of the early developed wind tunnel test flow display technologies. The oil agent and the tracer particle powder are evenly mixed and sprayed on the surface of the model. Under the frictional stress of the airflow around the model, the oil agent carries the tracer particle powder and moves with the airflow, forming an oil flow pattern on the model surface. Through the analysis of oil flow direction, oil film thickness change and map, we can understand the distribution of singular points in the flow field of the object surface, and interpret the aerodynamic characteristics such as attached flow,...

Claims

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Application Information

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IPC IPC(8): G01M9/08G01M9/02
CPCG01M9/02G01M9/08
Inventor 何彬华刘大伟周袁媛陈植吴继飞李聪健王新光熊贵天谢翔腾达解静郑剑刘芳麟姜蔚婉
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT