Rotating Instability of a Centrifugal Compressor with 2-Dimensional Impeller

Title
Rotating Instability of a Centrifugal Compressor with 2-Dimensional Impeller
Authors
강경준신유환김광호
Keywords
Centrifugal Compressor; Flow Instability; PIV; Reverse Flow; Flow Visualization; 원심압축기; 유동 불안정성; 입자영상속도계; 역류; 유동 가시화
Issue Date
2009-10
Publisher
The 10th AICFM
Abstract
This study investigated on details of flow characteristics of a compressor with 2-dimensional impeller at various flow rates. Experiment for a low speed compressor model in a water reservoir was performed to analyze the flow field in the vaneless diffuser and volute casing, which was done by PIV measurement. It was also focused on the periodic flow patterns occurring at low flow rate near unstable operating region of the compressor. At low flow rate condition, the flow visualization clearly shows that the flow energy from impeller is highly accumulated at the compressor exit by the blockage effect of a flow damper and consequently the reverse flow occurs in the diffuser.
URI
http://pubs.kist.re.kr/handle/201004/36446
Appears in Collections:
KIST Publication > Conference Paper
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