| 非设计工况下叶轮进口附近的流动及其控制 |
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| 引用本文： | 张人会,张学静,杨军虎.非设计工况下叶轮进口附近的流动及其控制[J].兰州理工大学学报,2003,29(4):64-66. |
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| 作者姓名： | 张人会 张学静 杨军虎 |
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| 作者单位： | 兰州理工大学,流体动力与控制学院,甘肃,兰州,730050 |
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| 摘 要： | 对叶轮进口附近流动在偏离设计工况下的回流和汽蚀(空化)两大特性进行了系统的描述,阐述了它们的诱发机理及其对泵性能的影响.根据回流的诱发机理对诱导轮的作用进行了全面的分析,提出了控制回流发生的有效方法,从叶片进口流动这一角度完善了离心泵叶片设计理论.
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| 关 键 词： | 离心泵 进口回流 进口比转速 叶片负荷系数 |
| 文章编号： | 1000-5889(2003)04-0064-03 |
| 修稿时间： | 2003年4月10日 |
Flow field around intake of impeller under off-design conditions and its control |
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| ZHANG Ren-hui,ZHANG Xue-jing,YANG Jun-hu.Flow field around intake of impeller under off-design conditions and its control[J].Journal of Lanzhou University of Technology,2003,29(4):64-66. |
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| Authors: | ZHANG Ren-hui ZHANG Xue-jing YANG Jun-hu |
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| Abstract: | Two major characteristic phenomena of backflow and cavitation near the inlet of the impeller under off-design condition are described systematically. Their generation mechanism and influence on performances of the pump are explained. According to the former mechanism, the function of the inducers is analyzed completely. A useful method to control the initiation of the back flow is proposed, and the design theory of the centrifugal pump blade is improved thereby. |
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| Keywords: | centrifugal pump inlet back flow suction specific speed blade-loading coefficient |
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