| 变轴向间隙下压气机近失速工况时弯曲静叶改善流场的实验研究(英文) |
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| 作者单位： | 哈尔滨工业大学能源科学与工程学院 黑龙江哈尔滨150001 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研项目 |
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| 摘 要： | 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.
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| 关 键 词： | 压缩机 弓形定子 转子/定子轴向缝隙 失速 |
| 收稿时间： | 24 September 2007 |
Flow Field Improvement by Bowed Stator Stages in a Compressor with Different Axial Gaps Under Near Stall Condition |
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| Authors: | Lu Huawei Chen Fu Wan Jilin Wang Zhongqi |
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| Institution: | School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | 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. |
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| Keywords: | compressor bowed stator rotor/stator axial gap near stall condition comer separation |
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