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Fusion Engineering and Design 42 (1998) 555561 Scaling criteria for IFE liquid wall protection scheme simulation

Summary: Fusion Engineering and Design 42 (1998) 555561
Scaling criteria for IFE liquid wall protection scheme simulation
Alice Ying *, Mohamed Abdou
Mechanical and Aerospace Engineering Department, Uni6ersity of California, Los Angeles, CA 90095-1597, USA
Applicability of experimental results to a full-size system depends on the scaling criteria on which the test
article/fluid medium is used. This paper presents a careful review and assessment of a number of key parameters
which influence fluid stability phenomena relevant to the IFE wall protection schemes, and provides guidance for
future simulation experiments. The analysis shows that the non-dimensional jet surface ripple size can be reproduced
by simultaneously preserving prototypical jet Reynolds and Weber numbers. The results show the difficulties of using
water as a simulant for liquid protectants in experiments for evaluating IFE thin and thick liquid wall protection
schemes. The analysis also shows that a modified HTS salt seems a good simulant for Flibe and that liquid sodium
a good simulant for liquid lead. However, in the absence of information on liquids other than water, serious questions
remain concerning the issue of scaling. Nevertheless, to best utilizing the available R&D resources, further
experiments should be performed using fluids with significantly lower vapor pressures, such as liquid metals or
low-melting temperature salts or eutectics. 1998 Elsevier Science S.A. All rights reserved.
1. Introduction
Concerns about the feasibility of IFE liquid
wall protection schemes have stimulated research
in the thermal hydraulics of liquid protection


Source: Abdou, Mohamed - Fusion Science and Technology Center, University of California at Los Angeles


Collections: Plasma Physics and Fusion