Three-dimensional relaxation effect on quasi-3D flow in a blade row with spanwise loading distribution

Tae Whan Kim, Masato Furukawa, Masahiro Inoue, Kuzuto Sasaki, Sumio Yamaguchi

Research output: Chapter in Book/Report/Conference proceedingChapter


This paper presents a quasi-three-dimensional flow calculation method including the three-dimensional flow relaxation effect in turbomachinery. A meridional flow solution is obtained by a streamline curvature method with a equilibrium equation formulated by exactly averaging the equation of continuity, momentum and energy equation in the circumferential direction. Blade-to-blade flows are solved by a singularity method considering the effects of stream surface inclination and axial velocity variation. A series of formulation for estimating the effects of the three-dimensional relaxation caused by the spanwise distribution of blade loading is performed using a secondary flow theory. In order to verify the validity of the method, it is applied to the flow analysis of a diagonal flow fan designed under a vortex type of constant circumferential velocity. The comparison of the calculated results with the experimental data shows a good agreement except the region where the flow field is affected by the tip leakage flow.

Original languageEnglish
Title of host publicationMemoirs of the Kyushu University, Faculty of Engineering
PublisherPubl by Kyushu Univ
Number of pages13
Publication statusPublished - Mar 1992

All Science Journal Classification (ASJC) codes

  • General Energy
  • Atmospheric Science
  • General Earth and Planetary Sciences
  • Management of Technology and Innovation


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