hi every body

i am simulating 3-D high molten steel flow in rectangular vessal.i am also incorporating buoyancy forces.But energy eqn is not converging can any body tell me what might be the cause? i"ll be very much glad if any bodyhelp me how to solve buoyancy forces ??//

Thx in advanse preethi

Decrease the underrelaxation factors for:

temperature -> 0.7 body force -> 0.4

Ra number so high ? > 10^6 ? Try getting a converged solution with g = -0.981 and after encreased it slowly.

hi on what basis we have to give the value of g?and why we "ve to give that much low value ?is there any thumb like rules to give this value?

fernando could you plz tell me how to approach further after getting converged sol say for g=-0.981????????

THX in advanse preethi