Create Your Own Lattice Boltzmann Simulation (With Python)

For today’s recreational coding exercise, we simulate fluid flow past a cylinder using the Lattice Boltzmann method. This is a really cool and simple technique to simulate fluid flow: instead of evolving the fluid (Navier-Stokes) equations directly, microscopic particles on a lattice are simulated with streaming and collision processes. The power of the method comes from reducing the high-dimensionality of the microscopic physics onto the lattice, which has limited degrees of freedom.