关键词: 铁磁材料;磁流体动力稳定性;旋转密封

Abstract: quations to calculate the distribution of magnetic field intensity in a cone space and the steady interface of the ferrofluid at rotating state were given with magnetic circuit method and simplified Navier-Stokes equation. Meanwhile the effects of sealing clearance, sealing angle and rotating speed on the sealing were also analysted.

Key words: Ferromagnatic material;Magnetohydrodynamic stability;Rotary sealing