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RESEARCH PAPERS

An Investigation of Nucleating Flows of Stream in a Cascade of Turbine Blading—Wake Traverses

[+] Author and Article Information
F. Bakhtar, R. A. Webb

School of Manufacturing and Mechanical Engineering, University of Birmingham, Birmingham B15 2TT, UK

M. Ebrahimi

University of Science & Technology, Narmak, Tehran, Iran

J. Fluids Eng 116(1), 121-127 (Mar 01, 1994) (7 pages) doi:10.1115/1.2910219 History: Received June 30, 1992; Revised April 28, 1993; Online May 23, 2008

Abstract

During the course of expansion in turbines, steam first supercools and then nucleates to become a two-phase mixture consisting of a very large number of minute droplets suspended in the parent vapor. To reproduce turbine two-phase flow conditions realistically requires a supply of supercooled vapor, which can be achieved under blow-down conditions. This paper is one of a set describing the equipment which has been constructed and the first family of results obtained on a short duration cascade tunnel working on the blow-down principle. The arrangements for traversing downstream of a cascade of nozzle blades and the results obtained are described in the paper.

Copyright © 1994 by The American Society of Mechanical Engineers
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