正方形ダクト内における交流磁場下の3次元電磁流体流れ解析

抄録

In our previous work, a three-dimensional numerical scheme for analyzing magnetohydrodynamic (MHD) flows under alternating-current magnetic fields was constructed, which takes into account the coupling with the electromagnetic fields in the solid and gas regions. In this study, a periodic boundary condition and an external traveling-wave magnetic field are introduced into the numerical scheme to investigate the dependences of the MHD flow in a square duct on the Hartmann number and the phase velocity of the external magnetic field. It is shown that the flow in the axial direction is encouraged with the increase in the Hartmann number or the angular frequency, while an opposite behavior is observed in terms of the oscillation amplitude of the fluid flow.