Dear all !

I want to calculate pressure drop in poiseuille2d, after running Pressure Drop is about .0006 in lattice units.

Other data :

u=0.02

Re=10

N=50

dx=0.02

dt=0.0004

Omega = 1.25

Nu_LB = (1/Omega - 1/2) / 3 = 0.1

Nu_p = Nu_LB* dx^2 / dt = 2.5 (m^2/sec?)

Deltap_P = Deltap_LB*dx^2/dt^2*Phrp_p

What is Phro_P (in default system)?

cheers

I try to use this program to simulation of water (nu_p=1.005*10^-6), I think Omega(Nu_LB)is constant in program, but when I calculate dt,dt, based on Nu_LB=.1, (Omega = 1.25) and change N to 1000 and u to .01, in results I see:

Iteration 500 565960.1803; rho=6.4684491e+244; uMax= 1.0000233;omega = 0.28571429

rho=6.4684491e+244 and omega = 0.28571429 ??///

Why?

can any one help me?

How can I control Omega in Program?