Visions Of Chaos FHP Lattice Gas Automata Tutorial|
Lattice Gas Automata (LGA) are a simplified model of gas and/or fluid flow. The FHP LGA model comes from Uriel Frisch, Brosl Hasslacher and Yves Pomeau and was introduced in 1986.
FHP LGA Model|
The FHP LGA is based on a hexagonal grid.
The rules for collisions are more complicated the simpler HPP LGA. The models include particles moving in 6 directions, 1 way collisions, 3 way collisions and stationary (rest) particles.
The Different FHP LGA Models|
Visions Of Chaos includes the three FHP LGA models. The images are a snapshot of a simulation that started from a highly dense circle in the middle of the screen and show the shockwave moving outwards.
FHP I - The simplest method. It supports 1 way and 3 way collisions.
FHP II - Same as FHP I but has additional rest particles (particles that can stop moving).
FHP II - Same as FHP II but has additional rules. This is the most accurate FHP model.
Other FHP LGA Settings|
Particle colors - The color for moving particles, stationary particles and the background can be customised.
Create AVI frames - saves the steps of the simulation so that an AVI movie can be created. Here is a quick sample movie