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Showing results 1 to 4 of 4 Search took 0.00 seconds. Search: Posts Made By: Docfreezzzz

Forum: Main CFD Forum July 18, 2011, 21:45

Replies: 12 Is there any c++ library that can be used for matrix calculation? Views: 2,645 Posted By Docfreezzzz Hector, I'm not aware of a quick way to... Hector, I'm not aware of a quick way to compute a determinant of a large sparse matrix. Thats an expensive operation even for small matrices and unusual in FEM of FV methods. Before you go down...

Forum: Main CFD Forum July 9, 2011, 03:29

Replies: 12 Is there any c++ library that can be used for matrix calculation? Views: 2,645 Posted By Docfreezzzz Thank you. I'm glad you found it useful. You... Thank you. I'm glad you found it useful. You may also want to watch the site CFDengineer.com (http://www.cfdengineer.com) as I am currently in the process of putting up all of my class notes and...

Forum: Main CFD Forum July 8, 2011, 14:58

Replies: 12 Is there any c++ library that can be used for matrix calculation? Views: 2,645 Posted By Docfreezzzz You mentioned you are calculating an inverse...... You mentioned you are calculating an inverse... this is not generally a good idea for the reasons you stated above. It is slow and expensive. Iterative methods (Gauss-Seidel or GMRES) are generally...

Forum: Main CFD Forum July 8, 2011, 14:10

Replies: 12 Is there any c++ library that can be used for matrix calculation? Views: 2,645 Posted By Docfreezzzz I'm guessing that you are referring to a sparse... I'm guessing that you are referring to a sparse matrix? If the matrix is dense, you are looking at 40,000*40,000*8 bytes or roughly 13GB for memory requirements. Most machines today have around 2GB...

Showing results 1 to 4 of 4

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