Experimental research on the effect of processing technology of cascade test article on the performance measurement

WANG Hui; TANG Kai; DAI Qiulin; LIU Zhigang; LING Daijun

doi:10.11729/syltlx20200087

Volume 35 Issue 2

Apr. 2021

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Journal of Experiments in Fluid Mechanics > 2021 > 35(2): 67-74. > DOI: 10.11729/syltlx20200087

WANG Hui, TANG Kai, DAI Qiulin, LIU Zhigang, LING Daijun. Experimental research on the effect of processing technology of cascade test article on the performance measurement[J]. Journal of Experiments in Fluid Mechanics, 2021, 35(2): 67-74. DOI: 10.11729/syltlx20200087

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Experimental research on the effect of processing technology of cascade test article on the performance measurement

Sichuan Gas Turbine Establishment, Aero Engine Corporation of China, Mianyang Sichuan 621000, China

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Received Date: July 17, 2020
Revised Date: October 06, 2020

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In order to solve the processing problems of the test article occurred in the cascade experimental research, investigation and study of the processing technologies of the test blade and Aero-Plexiglass sidewall have been carried out through processing test and experimental validation. And then the detection methods of the key parameters are put forward based on trilinear coordinates measuring instrument. It can be seen from the results that considering the processing cost and the effects of the blade surface roughness on the cascade performance, the suitable surface roughness of the blade for high speed and high load cascade is suggested to be not more than Ra=1.6. Stress lines and black areas may appear on the Aero-Plexiglass sidewall due to some factors, such as material selections, manufacturing procedures, processing technologies and improper assembly or use, etc., which would cause adverse effect on schlieren visual measurement in high speed state. The processing quality of the test article is greatly improved by developing the detection methods of the key parameters, which will be helpful to get more accurate and reliable performance data.
- cascade test,
- processing technology,
- surface roughness,
- glass cascades,
- detecting technology

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