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Applied Mathematics and Mechanics (English Edition) ›› 1992, Vol. 13 ›› Issue (3): 241-254.

• 论文 • 上一篇    下一篇

ON THE THROUGHFLOW WITH SWIRLING INFLOW IN ANNULAR DIFFUSER

俞纪伦1, 杨朝刚2, 王明德3   

  1. 1. Shanghai University of Technology, Shanghai Applied Mathematics and Mechanics Institute, Shanghai;
    2. Chengdu Electrical Power Machine Works, Chengdu;
    3. Xi’an Jiaotong University, Xi’an
  • 收稿日期:1991-01-18 出版日期:1992-03-18 发布日期:1992-03-18
  • 通讯作者: Pan Li-zhou

ON THE THROUGHFLOW WITH SWIRLING INFLOW IN ANNULAR DIFFUSER

Yu Ji-jun1, Yang Zhao-gang2, Wang Ming-de3   

  1. 1. Shanghai University of Technology, Shanghai Applied Mathematics and Mechanics Institute, Shanghai;
    2. Chengdu Electrical Power Machine Works, Chengdu;
    3. Xi’an Jiaotong University, Xi’an
  • Received:1991-01-18 Online:1992-03-18 Published:1992-03-18

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摘要： In this paper, a throughflow with swirling inflow in an annular diffuser is calculated. Under the assumption of small cross-flow, the flow near inner and outer wall surfaces is calculated based on the three-dimensional momentum integral equation of the boundary layer. The potential flow outside the boundary layer is computed by means of the iteration method based on the velocity gradient equation along the quasi-orthogonal direction of the meridional projection of the stream-line on the meridional surface and the constancy of flux equation[1]. The numerical results agree with the experiments quite well. This method is useful for analyzing the throughflow with pre-swirl in the annular diffuser.

关键词: annular diffuser, swirling inflow, three-dimensional boundary layer, small cross-flow

Abstract: In this paper, a throughflow with swirling inflow in an annular diffuser is calculated. Under the assumption of small cross-flow, the flow near inner and outer wall surfaces is calculated based on the three-dimensional momentum integral equation of the boundary layer. The potential flow outside the boundary layer is computed by means of the iteration method based on the velocity gradient equation along the quasi-orthogonal direction of the meridional projection of the stream-line on the meridional surface and the constancy of flux equation[1]. The numerical results agree with the experiments quite well. This method is useful for analyzing the throughflow with pre-swirl in the annular diffuser.

Key words: annular diffuser, swirling inflow, three-dimensional boundary layer, small cross-flow

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