need help

Hi every body.
I am the new member.
I have to learn the “LB” method as soon as possible.
Special thanks to the one can help me.
Thanks every one.

Welcome to the forum,

you might start with this paper:
Chen, Doolen. lattice Boltzmann method for fluid flows. Annual Reviews in Fluid Mechanics, 30 (1): 329-364, 1998
I suggest you read this first. Many concepts will be explained and some of your questions will be answered.