relation of speed of sound and lattice speed.

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


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