relation of speed of sound and lattice speed.

Lattice Boltzmann Method LBM: Theory
#1

Hi there,

Is there an easy way to understand the elemental relation that stands between the lattice velocity and the speed of sound relation of

c_0 = c_s * sqrt(3)

in the D2Q9 and many other finite discrete velocity models out there? I understand that it is for a general LBGK model and an ideal gas.

Thank you in advance

Puigar,

#2

if you got know this relation easily kindly send me also i need also