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RESEARCH PAPERS

Supersonic Diffusers With Reverse Flow Injection

[+] Author and Article Information
D. W. Kuntz

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, Ill. 61801

J. C. Dutton

Department of Mechanical Engineering, Texas A&M University, College Station, Texas

S. H. White

University of Illinois

A. L. Addy

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, Ill.

J. Fluids Eng 105(1), 47-52 (Mar 01, 1983) (6 pages) doi:10.1115/1.3240939 History: Received December 28, 1981; Online October 26, 2009

Abstract

In applications such as airborne high energy chemical lasers, diffuser size and weight can be critical parameters. This paper summarizes the authors’ research concerning the effects of flow injection into a supersonic diffuser in a direction opposite to that of the main flow. Experimental studies were conducted concerning the effect of diffuser performance, particularly length and pressure recovery, of this reverse flow, and a quasi-one-dimensional control volume analysis was performed to predict some of the diffuser flow properties. Single-stream, dual-stream, and sudden enlargement configurations were considered. This work has shown that a reverse flow can reduce the length of a diffuser while causing only a small decrease in overall pressure recovery.

Copyright © 1983 by ASME
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