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RESEARCH PAPERS

Estimation of Pressure Loss in Ring-Type Exit Chambers

[+] Author and Article Information
Marcel Escudier

Fluid Mechanics Research Group, Brown Boveri Research Center, CH-5405 Baden, Switzerland

J. Fluids Eng 101(4), 511-516 (Dec 01, 1979) (6 pages) doi:10.1115/1.3449020 History: Received February 26, 1979; Online October 12, 2010

Abstract

A simple Borda-Carnot type of analysis is presented which enables an estimate to be made of the pressure loss in the exit chamber of an axial-flow turbomachine. Based upon the recent experimental investigation of Escudier and Merkli [1], it is argued that the loss is primarily accounted for by dissipation of the vortex generated in ring-type exit chambers by the tangential inflow. For the most part this dissipation occurs in the outlet tube from the exit chamber. The analysis is particularly useful in providing a qualitative guide for the design engineer as to the influence on performance of changing the geometric proportions of an exit chamber.

Copyright © 1979 by ASME
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