Flow Field Improvement by Bowed Stator Stages in a Compressor with Different Axial Gaps Under Near Stall Condition

Flow Field Improvement by Bowed Stator Stages in a Compressor with Different Axial Gaps Under Near Stall Condition

The outlet flow fields of a low-speed repeating-stage compressor with bowed stator stages are measured with five-hole probe under the near stall condition when the rotor/stator axial gap varies. The performances of the straight stator stages are investigated and compared to those of the bowed stator...

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Veröffentlicht in:Chinese journal of aeronautics 2008-06, Vol.21 (3), p.215-222
Hauptverfasser: Huawei, Lu, Fu, Chen, Jilin, Wan, Zhongqi, Wang
Format: Artikel
Sprache:eng
Schlagworte:
bowed stator
compressor
corner separation
near stall condition
rotor/stator axial gap
压缩机
弓形定子
转子/定子轴向缝隙
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container_title Chinese journal of aeronautics
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creator Huawei, Lu
Fu, Chen
Jilin, Wan
Zhongqi, Wang
description The outlet flow fields of a low-speed repeating-stage compressor with bowed stator stages are measured with five-hole probe under the near stall condition when the rotor/stator axial gap varies. The performances of the straight stator stages are investigated and compared to those of the bowed stator stages. The results show that using bowed stator stages could alleviate the flow separation at both upper and low corners of the suction surface and the endwalls, and decrease the losses along the flow passage as well as the outlet flow angle. As the rotor/stator axial gap decreases, although the diffusion capacity of the compressor increases obviously, the outlet flow field in the straight stator stages deteriorates quickly. By contrast, little changes occur in the bowed stator stages, indicating that as the rotor/stator axial gap decreases, improved performance is achieved in the bowed stator stages.
doi_str_mv 10.1016/S1000-9361(08)60028-X
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source Access via ScienceDirect (Elsevier); EZB-FREE-00999 freely available EZB journals
subjects bowed stator
compressor
corner separation
near stall condition
rotor/stator axial gap
压缩机
弓形定子
转子/定子轴向缝隙
title Flow Field Improvement by Bowed Stator Stages in a Compressor with Different Axial Gaps Under Near Stall Condition
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