Effects of Boundary Layer in Disk CCMHD Generator

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  • ディスク型CCMHD発電機における境界層の影響
  • ディスクガタ CCMHD ハツデンキ ニ オケル キョウカイソウ ノ エイキョ

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Abstract

Two-dimensional time-dependent MHD equations representing the flow in a closed cycle MHD (CCMHD) disk generator have been solved numerically by finite difference method or finite element method in the r-z plane of the cylindrical polar coordinate system. Boundary layer phenomena in the Disk F 3 a channel of FUJI-1 facility are investigated. The current and velocity distributions in the boundary layer can be obtained, and the results suggest the boundary layer separation and eddy current occurs in the MHD channel. The dependence of these boundary layer phenomena on load resistance is investigated. Finally, the results are compared with those of quasi-one dimensional analyses and experiments.

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