A-10 羽根付ディフューザを有する遠心圧縮機の性能・騒音特性の改善(空力・圧縮機,一般講演)

概要

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The purpose of this study is to investigate the effects of the original wedge type vane and hub-side tapered diffuser vane, which has tapered portion on the hub side near diffuser leading-edge, installed into diffuser passages with shorten impeller-diffuser distance on the compressor performance and noise level radiated from the tested compressor. In addition to shortening the length, a half of the original impeller-diffuser distance, these diffuser vanes were placed on three variant inlet angle positions. The compressor performance can be improved but the radiated noise level enlarged by shorting impeller-diffuser distance. Hub-side tapered diffuser vane, furthermore, can improve the compressor performance, and wide stable operation range can be obtained.
2010-10-20