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《能源前沿(英文)》 >> 2008年 第2卷 第4期 doi: 10.1007/s11708-008-0084-4

Optimal ratio of bend channel in centrifugal compressor

1.School of Energy and Power Engineering, Xi'an Jiaotong University; 2.Shenyang Blower Works

发布日期: 2008-12-05

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摘要

A numerical investigation on the flow in a bend channel by coupling the impeller with the vaneless diffuser in a centrifugal compressor with different ratios (bend radius to bend channel width ) is presented. The jet-wake effect of the impeller outlet is considered and flow pattern in the bend channel and the performance of the centrifugal compressor stage are investigated. The results indicate that there is an optimal ratio for increasing the stage efficiency to the highest for a specific compressor stage. The change in ratio significantly affects the flow angle of the bend channel outlet. The prime reason for the total pressure loss in the bend channel is the wall friction in the bend channel.

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