Pressure: Bernoulli from the heuristic |U| field (p = p_∞ + ½ρ(U_∞² − |U|²)), ρ = 1.225 kg/m³, p_∞ = 101325 Pa.

Geometry-only surface–flow angle (°), clipped to the sidebar band; colormap from Preferences → Speed colormap. Flow +X. No streamlines. The D2Q9 LBM solve runs on Lattice-Boltzmann & 2D.