Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor
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Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor
Vol. 27, Issue 9, (2012)
作者机构:
1. 中国科学院 工程热物理研究所 先进能源动力重点实验室,北京,100190
2. 中国科学院研究生院,北京,100190
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Published:2012
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WANG Yong-sheng, TONG Zhi-ting, LIN Feng, et al. Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor[J]. 2012, 27(9).
DOI:
WANG Yong-sheng, TONG Zhi-ting, LIN Feng, et al. Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor[J]. 2012, 27(9).DOI:
Stall improvement mechanism of vaneless diffuser flow path control in a centrifugal compressor
To investigate the stall improvement mechanism of vaneless diffuser flow path control
a centrifugal compressor was simulated and compared with existing experimental data.According to characteristics of flow field and stall mechanism
a convergent-divergent type of impeller-diffuser casing designed was analyzed.The result shows that the stable flow range of centrifugal compressor increases by 2.8%
however
no obvious positive effects are found on the adiabatic efficiency which is slightly lower than that of the prototype.