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Forum: Main CFD Forum

April 26, 2016, 23:06

Replies: 24

Implementing Robin (Dirichlet+Neumann) boundary condition

Views: 2,217

Posted By mprinkey

You said that the waves are damped, even in the...

You said that the waves are damped, even in the flat bottom case as you resolve the spatial grid. Are you reducing the timestep proportionally? Also, are you solving the linear system to high...

Forum: Main CFD Forum

April 26, 2016, 15:49

Replies: 24

Implementing Robin (Dirichlet+Neumann) boundary condition

Views: 2,217

Posted By mprinkey

Here is the source of these equations. See...

Here is the source of these equations. See Appendix A.

http://arxiv.org/pdf/1604.07308v1.pdf

I had to find you at Berkeley and then find your advisor. You could have made this a lot easier...

Forum: Main CFD Forum

April 1, 2016, 20:50

Replies: 24

Implementing Robin (Dirichlet+Neumann) boundary condition

Views: 2,217

Posted By mprinkey

The formulation in the pdf at the top of this...

The formulation in the pdf at the top of this thread is NOT implicit in time even though you are solving a linear system for the new time values of w. You used central differencing of the d^2/dt^2...

Forum: Main CFD Forum

March 31, 2016, 07:58

Replies: 24

Implementing Robin (Dirichlet+Neumann) boundary condition

Views: 2,217

Posted By mprinkey

I agree with Prof Denaro. The splitting that we...

I agree with Prof Denaro. The splitting that we discussed before assumes that you can solve a forced wave equation for phi that is defined as Laplacian(w), extract w from a Poisson equation, and...

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