磁場出口部の液体金属電磁流体流れに関する三次元数値解析(流体工学,流体機械)

概要

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Three-dimensional numerical calculations have been performed on liquid-metal magnetohy-drodynamic (MHD) flow in a rectangular channel for the outlet region of the magnetic field. The continuity equation, the momentum equation and the induction equation have been solved numerically by the finite difference method. Along the flow axis (i.e. the channel axis), the pressure decreases rapidly as a fully-developed MHD flow, drops more rapidly in the magnetic-field outlet-region, and finally decreases slowly as a normal non-MHD flow. The pressure recovery that was observed in the magnetic-field inlet-region does not appear in the magnetic-field outlet-region. By this reason, the total pressure drop through the magnetic-field outlet-region becomes considerably larger than that through the magnetic-field inlet-region. The flow velocity distribution changes from a flat profile of a fully-developed MHD flow to a distribution having peaks in the regions near the channel walls and finally to a parabolic profile of a non-MHD laminar flow.
2005-05-25