A NEW INDEX FOR EVALUATING EFFECTS OF CIRCUMFERENTIAL GROOVED CASING TREATMENT ON EXTENDING STABILITY

Du Zhaohui; Liu Zhiwei

Volume 9 Issue 4

Oct. 1994

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Article Navigation > Journal of Aerospace Power > 1994 > 9(4): 409-412,445

Du Zhaohui, Liu Zhiwei. A NEW INDEX FOR EVALUATING EFFECTS OF CIRCUMFERENTIAL GROOVED CASING TREATMENT ON EXTENDING STABILITY[J]. Journal of Aerospace Power, 1994, 9(4): 409-412,445.

Citation:

Du Zhaohui, Liu Zhiwei. A NEW INDEX FOR EVALUATING EFFECTS OF CIRCUMFERENTIAL GROOVED CASING TREATMENT ON EXTENDING STABILITY[J]. Journal of Aerospace Power, 1994, 9(4): 409-412,445.

Du Zhaohui, Liu Zhiwei. A NEW INDEX FOR EVALUATING EFFECTS OF CIRCUMFERENTIAL GROOVED CASING TREATMENT ON EXTENDING STABILITY[J]. Journal of Aerospace Power, 1994, 9(4): 409-412,445.

Citation:

Du Zhaohui, Liu Zhiwei. A NEW INDEX FOR EVALUATING EFFECTS OF CIRCUMFERENTIAL GROOVED CASING TREATMENT ON EXTENDING STABILITY[J]. Journal of Aerospace Power, 1994, 9(4): 409-412,445.

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A NEW INDEX FOR EVALUATING EFFECTS OF CIRCUMFERENTIAL GROOVED CASING TREATMENT ON EXTENDING STABILITY

Du Zhaohui¹,
Liu Zhiwei²

1.
2nd Dept.,Shanghai Jiaotong University,Shanghai 200030
2.
7th Dept.,Northwestern Polytechnical University,Xi′an 710072

Received Date: 1993-12-01
Rev Recd Date: 1994-03-01
Publish Date: 1994-10-28

Abstract

Abstract

Based on the analysis of structural features of the circumferential grooved casing treatment,3-D incompressible,steady,time averaged N-S equation,continuity and k-ε two equation turbulance model equations are successfully applied to the flowfield calculation in the cascade with the circumferential grooved casing treatment.The flux of the gas through the treatment groove is proposed as a new index which can quantitatively evaluate the effectiveness and the capability of extending stability by circumferential grooved casing treatment.The effects of structural parameters and treatment positions on the effectiveness of extending stability are analysed and discussed.The conclusions are proved by a great deal of testing results.The method and technique can be applied to analysis and design of the casing treatments in a compressor.