Lattice Boltzmann — Poiseuille Flow

D2Q9 LBM simulation with bounce-back walls — draw obstacles!

Viscosity ν0.100

Drive force5e-4

Displayvelocity

Speed3

Re: —

Max vel: —

τ: —

Steps: 0

D2Q9 lattice Boltzmann with BGK collision: f_i(t+1,x+e_i) = f_i + (f^eq_i - f_i)/τ. Bounce-back for no-slip walls. Click to draw obstacles. Parabolic Poiseuille profile emerges.