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Conference Article: Dispersion of hot spots in steam generators

Achenbach, E.J. (Institut fuer Reaktorbauelemente, Kernforschungsanlage Juelich GmbH, Juelich (Germany))

Abstract

The streamwise development of hot spots in a helical type heat exchanger has been treated experimentally and theoretically as well. Velocity profiles across the bundle have been measured varying the Reynolds number, Re, from 103 to 1.35 x 105. Pressurized air or helium have been applied as coolant. In an additional series of tests the length scale parameter of the turbulence structure has been determined. It is correlated with the turbulent Peclet number, Pet, which occurs in the basic equation as an unknown parameter. Its value was found to be independent of Re (Pet = 8.2). Introducing this value leads to a good agreement of theoretical and experimental results.

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key words: Gas Cooled Reactor, Nuclear Technology
Reference:
Specialists' meeting on technology of steam generators for gas-cooled reactors Winterthur (Switzerland) 9-12 Mar 1987
International Atomic Energy Agency, International Working Group on Gas-Cooled Reactors, Vienna (Austria)
IWGGCR--15, pp:194-199