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Box simulation domain with circular dielectric disc inside
Posted 2018年5月9日 GMT-0400上午11:18 4 Replies
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I am using the equation based modeling to solve a coefficient form pde.
I want to have a simulation domain with a box shape and inside the box I want to place a cylinder with radius r and height h. The cylinder has dielectric constant epsilonr=3. All other space is Air.
Under the point geometry I now added a Box and also I add the cylinder inside the box domain.
I think I now have to define the disjoint domain of the cylinder with the Box. This domain I will call D in the following.
In the following I have to give the domain D the dielectric constant epsilonr=1 and the cylinder epsilonr=3.
Is this strategy correct?
To get the domain D I did
right click on Geometry > Booleans and Partitions > Difference
And then I select the two domains which I want to subtract.
My question is: How do I tell COMSOL that the two different domains have different epsilonr? I have created two materials, one with epsilonr=1 and the other one with epsilonr=3. But how do I assign the two domains (D and Cylinder ) to these two meterials?
In the end I will write the constant epsilonr into the pde.
Many thanks in advance.