Stall margin enhancement of a novel casing treatment subjected to circumferential pressure distortion

被引：55

作者：

Dong, Xu ^{[1
]}

Sun, Dakun ^{[1
]}

Li, Fanyu ^{[1
]}

Sun, Xiaofeng ^{[1
]}

机构：

[1] Beihang Univ, 37 Xueyuan Rd, Beijing, Peoples R China

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2018年 / 73卷

基金：

中国国家自然科学基金;

关键词：

Rotating stall; Compressor stability; Inlet distortion; Casing treatment; ACOUSTIC-IMPEDANCE; INLET DISTORTION; FLOW; COMPRESSOR; PERFORMANCE; INSTABILITY; IMPROVEMENT; INCEPTION;

D O I：

10.1016/j.ast.2017.12.005

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This paper presents the stall margin enhancement of a novel casing treatment subjected to circumferential pressure inlet distortion. Experimental results are carried out on a low-speed compressor. Experimental results show that the stall margin of the test compressor is gravely narrowed by circumferential pressure inlet distortion. The stabilization ability of this novel casing treatment and the pre-stall behavior of the compression system under the impacts of circumferential pressure distortion are shown in the present work. Although subjected to the inlet distortion, the stall margin can also be made up by 6%-8% due to the application of this novel casing treatment. Furthermore, the pre-stall dynamic results can indicate that the mechanism of this stabilization method is associated with two main observations, one is the weakening of the unsteady flow perturbations in the compressor, and the other is the delay in of the nonlinear amplification of the stall precursor waves. (C) 2017 Elsevier Masson SAS. All rights reserved.

引用

页码：239 / 255

页数：17

共 40 条

[1] Experimental assessment on effect of lower porosities of bend skewed casing treatment on the performance of high speed compressor stage with tip critical rotor characteristics [J].