Hello,
I am modelling an electromagnet. The geometry is pretty big and I would like to reduce computation time using some simmetry.
For example along the y direction (which is also the direction of the magnetic field, as the coils and the poles "lay" on the xz plane) my geometry is symmetric.
Hence I create a work plane on the zx plane at y=0 and I define a "cross section" in it. Then I define Partition to "cut" all the object in my geometry with that workplane and, finally, I delete everythin underneath the plane. In this way my geoemtry is extruded in the y>0 direction.
in the Magnetic field node I define a prefect magnetic conductor condition for all the surface laying in the zx plane and I solved the model.
Now I want to look at the solution for the whole model, even for the geometry I have deleted. So I mirrored my solution but what is mirrore is in the opposite direction, for example By is >0 in the y>0 direction and <0 in the y<0 direction, which is wrong.
What exactly I should do to solve half of my model and get the solution of everything?
I don't think that my way of doing that thing is correct (cut and delete the geometry and setting the normal magnetic condition), I think I need to say Comsol that I am define a plane of symmetry, but it is not clear to me how to use, for example, the "sector symmetry" node.
Can somebody give me some advice?
Where I can find some examples?
I am modelling an electromagnet. The geometry is pretty big and I would like to reduce computation time using some simmetry.
For example along the y direction (which is also the direction of the magnetic field, as the coils and the poles "lay" on the xz plane) my geometry is symmetric.
Hence I create a work plane on the zx plane at y=0 and I define a "cross section" in it. Then I define Partition to "cut" all the object in my geometry with that workplane and, finally, I delete everythin underneath the plane. In this way my geoemtry is extruded in the y>0 direction.
in the Magnetic field node I define a prefect magnetic conductor condition for all the surface laying in the zx plane and I solved the model.
Now I want to look at the solution for the whole model, even for the geometry I have deleted. So I mirrored my solution but what is mirrore is in the opposite direction, for example By is >0 in the y>0 direction and <0 in the y<0 direction, which is wrong.
What exactly I should do to solve half of my model and get the solution of everything?
I don't think that my way of doing that thing is correct (cut and delete the geometry and setting the normal magnetic condition), I think I need to say Comsol that I am define a plane of symmetry, but it is not clear to me how to use, for example, the "sector symmetry" node.
Can somebody give me some advice?
Where I can find some examples?