flux integration ?

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seyedashraf
seyedashraf 2011-8-27
Dear fellows,
I'm trying to implement neumann boundary conditions on some edges on a domain of my CFD code we have this form of integration : http://www.uploadup.com/di-T10V.png where, "n" is normal vector and "Ni" is the shape function (Galerkin) now the question is how to solve this in MATLAB
lets say I'm trying to do the integration in X direction like: http://www.uploadup.com/di-FWPR.png

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