Grid resolution (must be power of two): 128
Number of particles: 20000
Timestep: 0.1
Colouring ([N]one,[B]lues,[V]elocity): N
Other plots (Y/N): N
Try these parameters: (64,2500,0.1) - fast animation; (128,10000,0.1) - medium accuracy; (128,50000,0.1) - for powerful computers
