Magnetic force imposing on magnetic fluid in 3D magnetostatic field (no currents)

Hi

Everyone

I try to do with a simulation of magnetic fluid imposed on magnetic force in magnetostatic field (no

currents), but the results show that there seems to be no magnetic force on magnetic fluid.

Equations of magnetic force are expressed as:

Fx= mu0_emqa*(Mx_emqa*d(Hx_emqa,x)+My_emqa*d(Hx_emqa,y)+Mz_emqa*d(Hx_emqa,z))

Fy= mu0_emqa*(Mx_emqa*d(Hy_emqa,x)+My_emqa*d(Hy_emqa,y)+Mz_emqa*d(Hy_emqa,z))

Fz= mu0_emqa*(Mx_emqa*d(Hz_emqa,x)+My_emqa*d(Hz_emqa,y)+Mz_emqa*d(Hz_emqa,z))

I am sorry that I could find out what went wrong, and your help is highly appreciated!

Thanks!

Best wishes

Hongliang Zhou