Boundary-Layer Loss in Two-Phase Liquid-Metal MHD Channel Flows

概要

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Viscous homogeneous two-phase liquid-metal flow in an open circuit MHDchannel is solved by the method of matched asymptotic expansions with respect tothe reciprocal of Hartmann number, in order to make clear the mechanism ofthe boundary-layer loss, to estimate its order, and to find some methods toreduce it. It is shown that the flow velocity in the core region is effectively controledby the Hartmann boundary-layer on the insulating walls. The solution of theHartmann boundary-layer shows clearly how the distribution of the void frac-tion, the wetness of the liquid-metal against the wall and the aspect ratio of thechannel cross-section influence the boundary-layer loss. The order of the boundary-layer loss is estimated by the equivalent external load resistance of the closedcircuit MHD channel for invisid homogeneous two-phase liquid-metal flow.
社団法人日本物理学会の論文
1985-08-15