inflow u₀: 1.00 γ (p = γe): 0.10 art visc ν (×h): 0.10 diff μ: 0.20 fluid substeps/frame: 10 seed every (frames): 40 Pause Reset

Compressible Navier–Stokes flow around a slip-wall bluff body — CPU translation of the p5.js Bluff Body Slip sketch (N = 100, ~340 lines). The body is a 20×20 square excluded from the domain with slip walls on all four faces. Drag/lift are computed by integrating the pressure difference across the body.

Equations: ∂ρ/∂t + ∇·m = 0, ∂m/∂t + ∇·(m u) + ∇p = ∇·(ν∇u), ∂e/∂t + ∇·(e u) + p∇·u = ν|∇u|² with p = γe, u = m/ρ.

Cross-cuts at j = N/2 — Cyan: ρ. Yellow-orange: u_x. Red: p. Green: T = e/ρ − 1. Blue dots: particle traces. Blue square: bluff body. D_cum = ∫∫ν|∇u|² dx dt — cumulative dissipation.