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RESEARCH PAPERS

Pressure Recovery of Rotating Diffuser With Distorted Inflows

[+] Author and Article Information
Koji Kikuyama

School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan

Mitsukiyo Murakami

Aichi Institute of Technology, Yagusa-cho, Toyota, Aichi, Japan

Shin-ichi Oda

Nippon Denso Co. Ltd, Showa-cho, Kariya, Aichi, Japan

Ken-ichi Gomi

Mitsubishi Electric Cooperation, Wadasaki-cho, Hyogo-ku, Kobe, Japan

J. Fluids Eng 109(2), 114-120 (Jun 01, 1987) (7 pages) doi:10.1115/1.3242630 History: Received October 22, 1985; Online October 26, 2009

Abstract

The pressure recovery and velocity distributions in a two-dimensional rotating curved diffuser have been studied experimentally when even and uneven flows, respectively, were introduced to the diffuser. Two types of uneven flow were adopted; one has a linear velocity gradient on the surface of revolution and the other a linear velocity gradient in the meridian plane. The pressure recovery in the diffuser is improved by the unformalizing process of the uneven inlet velocities in the downstream sections if larger velocities are in the suction side region, but it is deteriorated if larger velocities are introduced in the pressure side region. When an uneven flow with a velocity gradient in the meridian plane is introduced to the diffuser, increased rotation speed and the gradient of the inlet velocity profile deteriorate the pressure recovery.

Copyright © 1987 by ASME
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