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A radioscopic technique to study convective fluid dynamics in opaque liquid metals

Published online by Cambridge University Press:  25 July 1997

J. N. KOSTER ,
T. SEIDEL  and
R. DEREBAIL
J. N. KOSTER
Affiliation:
University of Colorado, Department of Aerospace Engineering Sciences, Boulder, CO 80309-0429, USA
T. SEIDEL
Affiliation:
University of Colorado, Department of Aerospace Engineering Sciences, Boulder, CO 80309-0429, USA
R. DEREBAIL
Affiliation:
University of Colorado, Department of Aerospace Engineering Sciences, Boulder, CO 80309-0429, USA
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Abstract

Experimental verification of theoretical investigations into the behaviour of liquid metal convective flows is required to validate analytical models and numerical simulation codes. A real-time radioscopic density visualization system has been developed and is beginning to provide useful data. The X-ray facility for studying opaque low-Prandtl-number fluid flow is described. Density changes as low as 10−3 g cm−3 can be visualized by careful control of scatter radiation. The new capability is demonstrated with natural convection benchmark experiments in a narrow vertical layer of gallium melt of aspect ratio A=1.4. The density field in that cell is three-dimensional. Good agreement between calculations and experiments is obtained. Experiments with solidification are provided for further theoretical use.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 343 , 25 July 1997 , pp. 29 - 41
Copyright
© 1997 Cambridge University Press

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