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RESEARCH PAPERS

Experimental Study on Diffusers for Mixed-Flow Machines

[+] Author and Article Information
T. Sakai

Department of Mechanical Engineering, Science University of Tokyo, Shinjuku-ku, Tokyo, Japan

M. Sanbe, T. Nakayama

Hitachi Ltd., Hitachi, Japan

J. Eng. Power 101(2), 281-289 (Apr 01, 1979) (9 pages) doi:10.1115/1.3446484 History: Received December 22, 1977; Online July 14, 2010

Abstract

As a result of examining a relationship between inlet and inside flow patterns in the pure conical mixed-flow diffuser, it was disclosed that a comparatively uniform flow in the diffuser would be obtained resulting in a good pressure recovery. Also to find out an optimum configuration that would enable a stable and effective flow, tests on some model diffusers were made and the following was found: the skewed flow in the pure conical diffuser was rectifiable by means of fitting some guide fences on the face of the diffuser inner wall; though a little twist was observed in the main flow between the inner and outer walls, a curved diffuser gave a slight improvement on the recovered pressure over the case of pure conical one.

Copyright © 1979 by ASME
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