VOF mass loss
I am doing VOF simulation with 2ddp. Now using two phase air and water. Taking water as first phase and air as second. With small inlet with 96 m/s air impingement over water surface. Lance to water bath distance is 154 mm with 100 mm depth of water bath and having 100 mm radius of cylinder. Outlet is at top defined as pressure outlet. Now the problem is that when i am doing calculation it's diverging but the results are totally disappointing as the penetration depth of the air jet should have reached 14 mm while it simulation its stuck at 7.5 and further there is a mass loss of around 0.1 Kg out of 3 Kg.
Have used coarser mesh and its showing better result. Now according to the theory the finer mesh should have given better result but here it's 180 degrees. :(
Would be thankful if some would give suggestions.
And further i am using URF as
Tur. dissipation rate 0.8
Tur. viscosity 0.8
Step size 0.0001
Non iterative with Factional Scheme
Volume Fraction = geo reconstruct
Turb. KE = quick
Regard & Thanks in advance
After even changing my Under relaxation factors. More finer mesh was simulated. But still mass loss is there.
Is there any one who can help in this regard.
|All times are GMT -4. The time now is 00:26.|