Hi,
In Comsol 3.5, I was able to calculate the magnetic moment for an object (in the model below, a sphere) with a constitutive relation B=mu0 mur H, when embedded in a bigger block with B=mu0 H, (ie mur = 1), with a boundary condition on the outside of the block of a magnetic flux density. In postprocessing, I can then select "subdomain integration", and integrate the "magnetization, norm" over the sphere. I then get a value that matches the textbook value for the magnetic dipole moment of a sphere in a magnetic field.
In Comsol 4.1, I cannot select "magnetization" as a variable to integrate over in this case from the "derived values". Is there a switch somewhere that I'm not seeing to do this calculation?
Thanks,
(Just tried to attach a model, but it's too big! Sorry!)
In Comsol 3.5, I was able to calculate the magnetic moment for an object (in the model below, a sphere) with a constitutive relation B=mu0 mur H, when embedded in a bigger block with B=mu0 H, (ie mur = 1), with a boundary condition on the outside of the block of a magnetic flux density. In postprocessing, I can then select "subdomain integration", and integrate the "magnetization, norm" over the sphere. I then get a value that matches the textbook value for the magnetic dipole moment of a sphere in a magnetic field.
In Comsol 4.1, I cannot select "magnetization" as a variable to integrate over in this case from the "derived values". Is there a switch somewhere that I'm not seeing to do this calculation?
Thanks,
(Just tried to attach a model, but it's too big! Sorry!)