Water's 1625 m/s Sound Speed Became 18 m/s in the Pressure Subsystem — Where Toro–Vázquez Splitting Moves the Stiffness
·9 min read
At 1 bar, water's split wave speed A is 18.44 m/s, not the 1624.9 m/s sound speed. A/c is 0.011, so the stiffness now sits between the two IMEX steps.
[Paper Review] Prying Advection and Pressure Fully Apart — TV Flux Splitting for Baer–Nunziato
·10 min read
Split a Baer–Nunziato flux and sound speed stays in the pressure system. Toro Test 4 beat Rusanov by 1.5×; Noh then sent pressure to −0.12.
Catching Shocks Without Multiplying a Matrix at Every Face — AUSM Flux Splitting
·6 min read
The Shu–Osher left state in the code, density 3.857143 and pressure 10.33333, is the Mach 3 Rankine–Hugoniot state at gamma 1.4.