Hello everybody I am developing a small code for research oriented CFD applications (2D, using a mixed Control Volume - Finite Element method). I am looking for a fast algorithm to assemlbe the stiffness matrix: I am not terribly happy with the one I am using. Furthermore, I think this could be a standard subject in the literature, but I have not yet found it treated satisfactorily anywhere. Could anybody point-out some sources on the subject? Thank you in advance Fabio

Try this one:

The Finite Element Method: Linear Static and Dynamic Finite Element Analysis, Thomas J. R. Hughes, page 42

it's a classical FEM book, cheap and easily found in any library or book store

Cheers

Renato.