What You Give Up the Exact Riemann Solution For — the Roe Solver and the Entropy Fix
·7 min read
When an eigenvalue crosses zero, Roe locks an expansion shock. The sqrt(rho) average and Harten's floor decide whether that sonic kink stays.
When an eigenvalue crosses zero, Roe locks an expansion shock. The sqrt(rho) average and Harten's floor decide whether that sonic kink stays.