How can one correctly represent the nonlinear terms like Hu^2 or q^2/H or q*u in a Discontinuous Galerkin discretization?
Because if I expand the conserved variables namely, the free surface z and the discharge q in series of their various basis functions, then representation of their ratio q/z or product q*z becomes ratio or product of two series which I am not sure is correct. How does one work around this, please?
Jean-François Remacle
Quadrature rules will not integrate exactly FE multilinear forms. It is the same for compressible NS equations. Use quadrature rules that can integrate exactly a polynomial of order 2p+1 if you use polynomials at order p for approximating fields q and z.
0 votes
0 thanks
- Badges
- Science topic
More Chinedu Nwaigwe's questions See All
Similar questions and discussions