I Plugged in Pressure Directly and a Still Interface Started to Shiver — Two Forms of Nonideal LBM Forcing
·6 min read
When a van der Waals fluid is solved with lattice Boltzmann, putting pressure p in the force term versus chemical potential mu agrees in the continuum but splits on the lattice.
Why a Droplet at Rest Starts to Flow — Parasitic Currents and Well-Balanced Surface Tension
·6 min read
The parasitic currents born from curvature error, and the well-balanced method that eliminates them
The Star That Started Moving — Well-Balanced FVM and Angular Momentum in Polar Coordinates
·5 min read
Mis-discretize 2P/r and a quiet star will leak gas out of its center.