On 1/15/20 9:22 AM, David Eaton wrote:
> I understand the C0 element is piecewise linear across elements. However, I 
> did not experience the same issue in my own C++ code while I use C0 element 
> with the Petrov Galerkin stabilization terms. Actually, I am very confused at 
> this point. How could I get rid of it while using C0 element?

Not easily. But you can project the discontinuous function (namely, the 
gradient or vorticity of your velocity) onto a continuous finite element 
field. Then you again have a continuous function -- albeit a different one, of 
course, from the one you actually wanted.


Wolfgang Bangerth          email:                 bange...@colostate.edu
                            www: http://www.math.colostate.edu/~bangerth/

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