I would like to analyze some Voice Coil type motors and I would like to know the best way to model a permanent magnet in Elmer.
Thanks,
Henry von Tresckow
Modeling Permanent Magnets
Re: Modeling Permanent Magnets
Hello Henry
Using the magnetodynamics elmer model/solver:
Would setting a boundary condition work?
ex: top and bottom of a cylinder have a boundary condition something like this, assuming the surfaces lie in the z-plane and are centered on the origin:
A_x = -C * y
A_y = D * x
..where C and D are a constant of your choice, ex C=D=100
In Elmer format:
Magnetic Vector Potential 1 = Variable coordinate;Real MATC "y=tx(1); -100*y"
Magnetic Vector Potential 2 = Variable coordinate;Real MATC "x=tx(0); 100*x"
Magnetic Vector Potential 3 = 0;
this should result in a magnetic flux emitting from the cylinder.
Then the cylinder has to have appropriate magnetic material qualities (µ, epsilon, etc) and it could work?!
Ok I just realized that this won't work, the flux being constant at the boundary is of course not "real life"...
but maybe there is something useful here for someone
Regards
Mike Stamm
Using the magnetodynamics elmer model/solver:
Would setting a boundary condition work?
ex: top and bottom of a cylinder have a boundary condition something like this, assuming the surfaces lie in the z-plane and are centered on the origin:
A_x = -C * y
A_y = D * x
..where C and D are a constant of your choice, ex C=D=100
In Elmer format:
Magnetic Vector Potential 1 = Variable coordinate;Real MATC "y=tx(1); -100*y"
Magnetic Vector Potential 2 = Variable coordinate;Real MATC "x=tx(0); 100*x"
Magnetic Vector Potential 3 = 0;
this should result in a magnetic flux emitting from the cylinder.
Then the cylinder has to have appropriate magnetic material qualities (µ, epsilon, etc) and it could work?!
Ok I just realized that this won't work, the flux being constant at the boundary is of course not "real life"...
but maybe there is something useful here for someone
Regards
Mike Stamm