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[1]毋杰,徐楠,杨大昱,等.半开式离心泵叶顶间隙对泵性能稳定性的影响[J].火箭推进,2014,40(04):29-34.
　WU Jie,XU Nan,YANG Da-yu,et al.Influence of tip clearance of semi-open centrifugal pump on performance stability[J].Journal of Rocket Propulsion,2014,40(04):29-34.

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半开式离心泵叶顶间隙对泵性能稳定性的影响

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 40 期数: 2014年04期页码: 29-34 栏目: 研究与设计出版日期: 2014-08-28

Title:: Influence of tip clearance of semi-open centrifugal pump on performance stability

作者:: 毋杰; 徐楠; 杨大昱; 刘军年; 西安航天动力研究所，陕西西安 710100

Author(s):: WU Jie; XU Nan; YANG Da-yu; LIU Jun-nian; Xi’an Aerospace Propulsion Institute, Xi’an 710100, China

关键词:: 半开式离心泵; 叶顶间隙; 边界层; 泄漏涡; 数值模拟

分类号:: V434-34

文献标志码:: A

摘要:: 为提高火箭发动机涡轮泵性能稳定性，应用边界层理论进行了半开式离心泵叶顶间隙流动特性研究，利用边界层动量积分方程对叶顶间隙内边界层厚度进行求解，并开展了不同叶顶间隙泵性能试验及流场数值模拟研究。结果表明，当叶顶间隙值等于间隙内边界层厚度值时，间隙泄漏涡不再增强，可获得稳定的泵性能；当叶顶间隙过大，会使泵容积效率降低，导致泵性能急剧下降。该理论方法可作为设计过程确定半开式离心泵叶顶间隙的重要参考。

Abstract:: In order to improve the performance stability of liquid rocket engine turbopump, the flow characteristics of semi-open centrifugal pump tip clearance are studied by means of the boundary layer theory. The thickness of the boundary layer in tip clearance is calculated with the boundary layer momentum integral equation. The pump performance test and numerical simulation study are carried out with different tip clearances. The results show that, when the tip clearance is equal to the thickness of boundary layer, the tip clearance leakage vortex will no longer be enhanced and the pump performance is stable. The volumetric efficiency of the pump is low when the tip clearance is too large and the pump performance drops off precipitously. The theoretical method can be used as an important reference to determine the semi-open certrifugal pump tip clearance.

参考文献/References:

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备注/Memo

收稿日期：2014-04-16；修回日期：2014-05-20 作者简介：毋杰（1981—），男，硕士，研究领域为流体机械与工程

更新日期/Last Update: 1900-01-01