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RESEARCH PAPERS

Back Flow in Turbines of Nuclear Closed-Cycle Gas Turbine Plants in Case of Circuit Pipe Rupture

[+] Author and Article Information
K. Bammert, P. Zehner

Institute for Turbomachinery and Gasdynamics, University of Hanover, Germany

J. Eng. Power 97(2), 189-194 (Apr 01, 1975) (6 pages) doi:10.1115/1.3445957 History: Received November 27, 1973; Online July 14, 2010

Abstract

For operation of a gas turbine in single-cycle arrangement with a high-temperature reactor, rupture of a main circuit pipe has to be included in the safety considerations. In the event of such an accident there may be a back flow through the turbo machines or a forward flow up to the choking limit. This paper is a report on tests carried out in a two-dimensional cascade wind tunnel on turbine cascades under back flow conditions. By the example of three selected representative cascades the characteristic features in turbine cascades with back flow are discussed. These cascades are a rotor blade tip section with aerofoil-like profiles and a wide pitch, a stator blade or rotor blade mean section with an usual deflection and a rotor blade root section with a narrow pitch and a large deflection.

Copyright © 1975 by ASME
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