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Color oil flow formula suitable for subsonic speed temporary flushing wind tunnel and use method

A subsonic and color technology, applied in the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as oil spectrum differences, affecting test analysts' judgment of model surface flow field structure, oil film viscosity fluctuations, etc.

Inactive Publication Date: 2020-04-10
AVIC SHENYANG AERODYNAMICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, different wind tunnel operation types, different temperature environments, and different incoming flow Mach numbers will cause large fluctuations in the viscosity of the oil film, resulting in large differences in the final oil spectrum, which will affect the test analysts' understanding of the model surface flow. Field Structure Judgment

Method used

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  • Color oil flow formula suitable for subsonic speed temporary flushing wind tunnel and use method
  • Color oil flow formula suitable for subsonic speed temporary flushing wind tunnel and use method

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Embodiment 3

[0037] Embodiment 3 oil flow test effect diagram sees attached figure 1 .

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Abstract

The invention discloses a color oil flow formula suitable for a subsonic speed temporary flushing wind tunnel and a use method. The color oil flow formula is composed of a carrier, a diluent and a filling material, and the mass ratio of the carrier to the diluent to the filling material is 5: 2: 3. According to the formula, a clear oil flow spectral line can be formed in a transient wind tunnel environment. After fine proportioning, the obtained oil spectrum is good in curing degree and not prone to being blown to be disordered by recoil airflow stopped in a wind tunnel. The proportioning is simple, convenient and fast, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of colored oil flow tests, in particular to a colored oil flow formula suitable for a subsonic temporary flushing wind tunnel. Background technique [0002] In the wind tunnel test technology, the colored oil flow test technology is a relatively mature and common test technology. By coating a layer of oil film containing fine tracer particles on the model surface, when the wind test is carried out, the boundary layer on the model surface The shear stress formed by the airflow pushes the oil film to do viscous movement, forming an oil flow spectrum. The oil flow test technology applied to conventional wind tunnel tests usually uses white titanium dioxide powder (titanium dioxide) as tracer particles (which can be called conventional oil flow test technology) to display the flow state on the surface of the model. [0003] For the high-speed temporary flushing wind tunnel, when carrying out the oil flow test, ...

Claims

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Application Information

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IPC IPC(8): G01M9/06
CPCG01M9/065
Inventor 尚金奎王鹏赵荣奂张雪衷洪杰李玉军王猛张华明
Owner AVIC SHENYANG AERODYNAMICS RES INST
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