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Search took 0.00 seconds. Search: Posts Made By: FMDenaro
Forum: Main CFD Forum December 23, 2013, 11:28
Replies: 22
Views: 4,534
Posted By FMDenaro
well, we can have different opinions, no...

well, we can have different opinions, no problem... what I think is that if you have two finite lenght vectors containing the nodal values the first for FEM solution, the second for FVM solution, you...
Forum: Main CFD Forum December 23, 2013, 05:30
Replies: 22
Views: 4,534
Posted By FMDenaro
yes, the above description is general and is...

yes, the above description is general and is correct... but just try to apply the FEM to

du/dt + d/dx(u^2/2-ni*du/dx) = 0

what after you project along some test function?

On the other hand,...
Forum: Main CFD Forum December 22, 2013, 08:05
Replies: 22
Views: 4,534
Posted By FMDenaro
you are correct, but just think about the case in...

you are correct, but just think about the case in which, when you project using the 1/|V| shape function (compact support), FEM becomes a FVM . That mathematically defines a weak solution and an...
Forum: Main CFD Forum December 22, 2013, 03:59
Replies: 22
Views: 4,534
Posted By FMDenaro
Well, the issue is even more complex...despite...

Well, the issue is even more complex...despite the FEM implies a functional approximation, that does not define the meaning of the nodal values. As FEM is based on projection along suitable shape...
Forum: Main CFD Forum December 21, 2013, 09:23
Replies: 22
Views: 4,534
Posted By FMDenaro
To tell the true I don't care, if you write a...

To tell the true I don't care, if you write a Tecplot-formatted file then you can do better post-processing ...
Forum: Main CFD Forum December 20, 2013, 17:30
Replies: 22
Views: 4,534
Posted By FMDenaro
However, this is not a limit of fluent, it is the...

However, this is not a limit of fluent, it is the second order FV formulation that leads to value at the centroid be equal to the volume averaged value.
Forum: Main CFD Forum December 20, 2013, 17:05
Replies: 22
Views: 4,534
Posted By FMDenaro
Speaking about fluent, consider that the value in...

Speaking about fluent, consider that the value in a centroid is volume averaged and represents a constant over the finite volume at second order of accuracy.
Higher order representation of averaged...
Forum: Main CFD Forum December 20, 2013, 13:06
Replies: 22
Views: 4,534
Posted By FMDenaro
FD or FV methods imply that a local interpolation...

FD or FV methods imply that a local interpolation exists... for example, developing FD formulas from Taylor expansion is exactly as same as deriving the coefficients of Lagrangian polynomials. That...
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