LBM for Euler equations

Lattice Boltzmann Method LBM: Theory
#1

Hi,
is there any sense to solve Euler’s equations for incompressible fluid by LBM?
Here viscosity is a zero.
It is supposed to apply it to modeling of waves on a free water surface.
Thanks.

#2

Hello,

as far as I know, this cannot be done. Setting viscosity to zero would require a relaxation time of 0.5. Succi writes in his book that the “mirage of zero viscosity” does not work with LBM.

Best,
Timm

#3

I think Timm is right. Setting the LB relaxation time to such a value would probably only work if the governing macroscopic equations you are aiming for are linear.

#4

Thanks for advices