Near-blade flow structure modification

22nd Fluid Mechanics Conference

物理学;力学

Kura, T.^1 ; Fornalik-Wajs, E.^1

AGH University of Science and Technology, Department of Fundamental Research in Energy Engineering, al. Mickiewicza 30, Krakow

30-059, Poland^1

关键词: Blade shapes;    Compressor performance;    D-curvature;    Design proposal;    Performance maps;    Structure modification;    Three-dimensional analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/760/1/012013/pdf
DOI  :  10.1088/1742-6596/760/1/012013

学科分类：力学，机械学

来源: IOP

【 摘 要 】

In this paper, the importance of near-blade flow structure influence on the performance of a centrifugal compressor was discussed. The negative effects of eddies and secondary flows appearance were described, together with the proposal of their reduction. Three-dimensional analyses were performed for the rotors. Focus was placed on the blade's 3D curvature impact on the efficiency of compression, and the influence of blade-shroud tip existence. A few design proposals were investigated - their performance maps were the basis of further analysis. Proposed modification of blade shape changed the near-blade flow structure and improved the compressor performance.