Numerical Accuracy in CFD
Numerical accuracy is of prime importance when one is playing with numbers especially in CFD. In CFD the naive understanding of numerical accuracy has to be shed off. It pertains to the scheme, grid, the problem involved, and many other factors. However, I will try to portray some of the predominant ones. The sources of numerical accuracy are;
1. Numerical scheme
Discretisation - order of accuracy of the convective terms, minimal amount of artificial viscosity
Tunable parameters - like co-effcients in JST...
Wednesday, March 27, 2013
Thursday, March 21, 2013
4:14 PM
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Free On-line Books
Ok side tracking somewhat from CFD this time.
I stumbled upon these few websites for good information, which is open-source and free of course !
I know only a few but would like to increase the list. Much to learn, much to know about.
Would like to know more links from you all.
Indian Regional Language Books
http://www.dli.ernet.in/
Arxiv [ arxiv.org ]
Open access to e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics
Archive
http://www.archive.org/
Project...
Friday, March 15, 2013
12:44 PM
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Sparse Matrices (Basics)
This post is my personal experience with sparse matrices and is not extensive as is my knowledge about them. I would like to go through these as follows steps / directions.
1. What is a sparse matrix ?
A matrix having many zero elements or block elements (a matrix consisting of smaller matrices of size m-by-m, can be zero as well) .
Example of sparse matrix (Wikipedia)
1 2 3...
Thursday, March 7, 2013
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