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Axisymmetric boundary condition in Moving Mesh mode
Posted Jan 20, 2010, 5:09 p.m. EST 1 Reply
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Hi,
I am using Moving Mesh (ALE) mode together with Incompressible Navier-Stokes mode. I have already applied axisymmetric condition in the N-S mode, right now I want to know how to set a similar boundary condition in Moving Mesh (ALE) mode.
To be specific: u = 0, and d(v)/dr = 0. (I can only type d()/dt instead of partial derivative). I can set u directly, but I don't know how to do with the partial derivative in COMSOL.
Thanks!
I am using Moving Mesh (ALE) mode together with Incompressible Navier-Stokes mode. I have already applied axisymmetric condition in the N-S mode, right now I want to know how to set a similar boundary condition in Moving Mesh (ALE) mode.
To be specific: u = 0, and d(v)/dr = 0. (I can only type d()/dt instead of partial derivative). I can set u directly, but I don't know how to do with the partial derivative in COMSOL.
Thanks!
1 Reply Last Post Jan 22, 2010, 12:52 a.m. EST
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Posted:
1 decade ago
Hi,
If you look at the equation parts, in physics tab, equation system, you can find the parameter that you are looking for. As far as I know you can add a "t" to your variable and that means the first derivative. Say x, xt...
Hani
If you look at the equation parts, in physics tab, equation system, you can find the parameter that you are looking for. As far as I know you can add a "t" to your variable and that means the first derivative. Say x, xt...
Hani