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Forum: Main CFD Forum

October 14, 2011, 13:16

Replies: 3

Problem with BICGSTAB

Views: 2,465

Posted By Amir_Ghasemi

Hello TheBoyce,...

Hello TheBoyce, (http://www.cfd-online.com/Forums/members/theboyce.html)

As I have said, I think that before fixing the pressure of one node you should become sure that your matrices possess...

Forum: Main CFD Forum

July 31, 2011, 10:42

Replies: 3

Problem with BICGSTAB

Views: 2,465

Posted By Amir_Ghasemi

Hello all, I have just found what the...

Hello all,

I have just found what the problem was. May matrix was singular with constant vector in null space and its determinate was zero and it had emerged from discretizing PPE with Neumann...

Forum: Main CFD Forum

July 28, 2011, 01:39

Replies: 3

Problem with BICGSTAB

Views: 2,465

Posted By Amir_Ghasemi

Problem with BICGSTAB

Hello all,

I have written a BICGSTAB solver for Poisson equation in SPH (Smoothed particle hydrodynamics) method. As all the boundaries are Neumann kind, the resulted matrix is singular, to...

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