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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: Vasilis

Forum: Main CFD Forum October 29, 2009, 08:56

Replies: 8 Need help to use Hermite basis functions Views: 2,060 Posted By Vasilis If I know this boundary curve, cann't I... If I know this boundary curve, cann't I substitute y by f(x) in the integrand, multiply the integrand by y'(x) and then integrate over x?

Forum: Main CFD Forum October 29, 2009, 08:08

Replies: 8 Need help to use Hermite basis functions Views: 2,060 Posted By Vasilis Here is an interesting question: When one... Here is an interesting question: When one uses any kind of mapping, one can transform the double integral from dxdy to |J|dx'dy', where |J| is the determinant of the Jacobean matrix, dx' and...

Forum: Main CFD Forum October 26, 2009, 06:12

Replies: 8 Need help to use Hermite basis functions Views: 2,060 Posted By Vasilis This type of mapping is similar to the one I... This type of mapping is similar to the one I wrote. The only difference is that you omitted the term xx_i * S_i. I tried to use this mapping, and although I got the correct solution, the slope is...

Forum: Main CFD Forum October 23, 2009, 10:52

Replies: 8 Need help to use Hermite basis functions Views: 2,060 Posted By Vasilis Well, I need to clarify one thing. Based on you... Well, I need to clarify one thing. Based on you notation, the u_i and ux_i are both unknowns that we need to solve for. This means that if each element has 2 nodes, we have 4 unknowns (2 for u_i and...

Forum: Main CFD Forum October 22, 2009, 10:20

Replies: 8 Need help to use Hermite basis functions Views: 2,060 Posted By Vasilis Need help to use Hermite basis functions Dear all, I am trying to solve a fairly simple test case problem with Hermite basis function and FEM. Lets suppose that F_i is the set of basis functions, and this set is comprised of two sets:...

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