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Color oil flow formula for specifically calibrating range of Mach numbers and suitable for high speed wind tunnel

A high-speed wind tunnel and Mach number technology, which is applied in the testing of machines/structural components, coatings, instruments, etc., can solve the problems that cannot be calibrated and troubles for scientific researchers, and achieve the effect of guaranteed performance and easy purchase

Inactive Publication Date: 2018-09-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing color oil flow coatings are often unable to calibrate the specific working conditions they are suitable for, which brings great troubles to scientific researchers when selecting coating formulations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] An oil flow formula suitable for oil flow experiments with a Mach number range of 0.5-0.9, which is prepared by mass percentages from titanium dioxide powder as an indicator, silicone oil as a carrier oil, and oleic acid as a diluent. :

[0020] Silicone oil: 35%

[0021] Tracer particles: 21.7%

[0022] Color paste: 43.3%

[0023] 1. Formula configuration: according to the mass percentage: carrier oil 35%, tracer particles 21.7%, dyeing agent 43.3%. Proportioning is carried out. During the coating preparation process, attention should be paid to fully stirring the tracer particle powder and the oil agent. After the proportioning is completed, put it into the paint bottle.

[0024] 2. Open the paint bottle and stir it with a glass rod to make it evenly mixed.

[0025] 3. Pour an appropriate amount of oil flow paint into the beaker.

[0026] 4. The surface of the test piece to be brushed is placed horizontally, and the brushing direction should be perpendicular to t...

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Abstract

The invention relates to a color oil flow formula for specifically calibrating range of Mach numbers and suitable for a high speed wind tunnel, and particularly relates to the color oil flow formula suitable for the oil flow experiment of the range of Mach numbers of 0.5-0.9. Using the tracer particle-calcium carbonate powder, the carrier oil-silicon oil and the coloring agent-red oil paste, yellow oil paste and green oil paste is determined, and the mass percentage relationship of the three is determined. A large number of oil flow display experiments prove that the oil flow formula can acquire high-quality color oil flow experiment image which is used for analyzing the model surface air flow pattern and deepening the understanding of the flow field information so as to achieve the flow visualization effect.

Description

technical field [0001] The invention relates to a color oil flow formula suitable for a high-speed wind tunnel with a clearly calibrated Mach number range, in particular to a color oil flow formula for oil flow experiments with a Mach number range of 0.5-0.9. Background technique [0002] The oil flow map obtained by the oil flow experiment mainly reflects the flow picture near the object surface, which makes the flow field "visualized", and can analyze complex flow phenomena such as secondary flow, separation flow and vortex flow according to the obtained oil flow trajectory. . Therefore, the oil flow experiment is one of the important experimental methods to understand the separation of the boundary layer and the vortex structure. It is widely used in the flow field display and measurement of the flow field of aerodynamic components, such as: aircraft fuselage and wings, aeroengines, gas turbines, etc. Blades, end walls, etc. of turbomachinery. [0003] The principle of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/02C09D183/04C09D7/61
CPCG01M9/02C08K2003/2241C08K2003/265C09D7/61C09D183/04C08K3/26C08K3/22
Inventor 高丽敏郑天龙葛宁杨冠华蔡明吴锋
Owner NORTHWESTERN POLYTECHNICAL UNIV
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