A model for the dryout heat flux during penetration of water into solidifying rock is developed by combining steady-state one-dimensional phase change theory with available semiempirical equations for (i) the dryout heat flux in a porous medium and (ii) the permeability of hot rock cooled by water. The model is in good agreement with measurements made during the pouring of water onto molten magma. The implication of the model with respect to stabilizing molten-nuclear-reactor-core material by flooding from above is discussed.

Issue Section:
Technical Briefs
Keywords:
water, rocks, heat transfer, flow through porous media, geophysical fluid dynamics, solidification, fission reactor accidents, two-phase flow, permeability, flow instability, porous media, water ingression, solidifying rock, dryout heat flux
Topics:
Heat flux, Rocks, Solidification, Water, Permeability, Porous materials
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Copyright © 2006
 by American Society of Mechanical Engineers
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