An Investigation of Nucleating Flows of Steam in a Cascade of Turbine Blading

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

School of Manufacturing and Mechanical Engineering, University of Birmingham, Birmingham B15 2TT, U.K.

M. H. Shojaee-Fard

University of Science and Technology, Tehran, Iran

M. A. Siraj

University of Khartum, Sudan

J. Fluids Eng 115(1), 128-134 (Mar 01, 1993) (7 pages) doi:10.1115/1.2910094 History: Received September 02, 1991; Online May 23, 2008


During the course of expansion in turbines steam first supercools and then nucleates to become a wet mixture. To reproduce turbine nucleating conditions realistically requires a supply of supercooled vapor. This can be achieved under blow-down conditions and an experimental facility for such studies has been constructed. The results of the first experimental investigation of nucleating flows of steam in a cascade of nozzle blading using the equipment are presented. The experimental results presented consist of surface pressure measurements, Mach-Zehnder and shadow photography. Comparisons with theoretical solutions show reasonable agreement.

Copyright © 1993 by The American Society of Mechanical Engineers
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