Radial velocity distribution in the melt bridge under uniform axial magnetic field

摘要

Numerical simulations on thermocapillary convection of low Pr number molten tin under uniform magnetic field in microgravity have been conducted. The Navier-Stokes equations coupled with the energy conservation equation are solved on a staggered grid, and the free surface is captured by using the level set method. The present results show that the radial velocity gradient in the liquid bridge at different radius position is suppressed and the inhibiting effect is also enhanced as the increasing of magnetic field strength under the uniform axial magnetic field. The inhibition for radial velocity gradient on the free surface is significant and the varying amplitude is large.