0
research-article

Investigation on the stall inception circumferential position and stall process behavior in a centrifugal compressor with volute

[+] Author and Article Information
Hanzhi Zhang

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
13488680948@163.com

Ce Yang

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
yangce@bit.edu.cn

Dengfeng Yang

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
dfqiuchong@126.com

Wenli Wang

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
13167597567@163.com

Changmao Yang

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
yangcm@bit.edu.cn

Mingxu Qi

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
qimx@bit.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4041108 History: Received July 11, 2018; Revised July 15, 2018

Abstract

The present paper numerically and experimentally investigates the stall inception mechanisms in a centrifugal compressor with volute. The compressor performance experiment was conducted and the casing wall static pressure distributions were obtained by seventy-two static pressure sensors firstly. Then, the full annular unsteady simulations were carried out at different stable operating points, and the time-averaged static pressure distributions were compared with the experimental results. Finally, the stall process of the compressor was investigated by unsteady simulations in detail. Results show that the stall inception onset is determined by the impeller leading edge spillage flow, and the occurrence time of trailing edge backflow is prior to the leading edge spillage. The non-uniform static pressure circumferential distribution at impeller outlet induced by volute tongue causes the two stall inception regions locating at certain circumferential positions, which are 120° and 300° circumferential positions at impeller leading edge, corresponding to the circumferential static pressure peak and bulge regions at impeller outlet, respectively. These two stall inception zones are not moving along circumferential direction because the stall inception circumferential position is dominated by the impeller outlet static pressure distribution. Even that, the obvious low frequency signals appear after the spillage crossing two blade leading edges because the spillage vortex begins to shed. Furthermore, the spillage vortexes cause the local low static pressure zone ahead of blade leading edge in the centrifugal compressor with volute, suggesting that the spillage can be predicted by the steady casing wall static pressure measuring.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In