[Paper Review] The Same Point Read 0.544 Apart Along Two Paths — Curl Involutions on a Staggered Grid
·8 min read
A staggered grid holds interface curl near 1e-12 for 400 steps. The collocated Rusanov run on the same shear opens a path gap of 0.544.
1950 — When von Neumann Deliberately Smeared the Shock: Artificial Viscosity and Odd-Even Decoupling
·6 min read
The von Neumann term xi^2 (du)^2 kills post-shock sawteeth on a Sod tube. Omit the code's factor 0.25 and the same xi makes Q four times larger.