Ideal pressure term for non ideal fluid LBM simulation

Lattice Boltzmann Method LBM: Theory
#1

Dear All participant of this forum

I am simulating a planar couette flow in LBM. The study is on the shear banding of colloidal glass. I have osmotic pressure
as a driving force and i have multiplied it with a prefactor to make it in the LBM unit.

I read from a book that LBM by itself has ideal pressure (i.e rho*cs_2) in it and one has to subtract this term from the applied pressure during implementation. In my simulation i had subtracted this term but i found it is so big and keep on increasing the density in my simulation.

Is there any one here who has experience in simulating non ideal fluid?

Thanks

Addis

#2

Hello!I am a begginer about LBM.I am comfused about ideal pressure (i.e rho*cs_2) in LBM.I do not know how to convert it to macro pressure.And you say that "one has to subtract this term from the applied pressure during implementation."So I want to know which is the book?
Best wishes for you!