|May 29, 2015, 03:25||
SettlingFoam and V0 initial condition
Join Date: May 2015
Posts: 10Rep Power: 2
I start from settlingFoam - dahl - tutorial and modify patterns step by step. My aim is to reproduce a gravity current.
My blockmesh consists in one rectangle of 500*20 m^2 with 1000*40 cells. I impose a time dependant condition for the Alpha inlet:
internalField uniform 0;
The run is supposed to last up to 6400.
The courant number increases while the deltaT decreases. My run crash as reaching a time value of 1730. The quantity which exhibits anormal value is found to be Alpha.min as this value is negative and so makes no sense.
I think this could be due to the V0 initial condition in transport propieties (initiate at 0.005) and I could impose a - too - strong settling. But I want to impose this value...
Before to post here I tried many combination with the differents coefficient but as soon as I set up a V0 of 0.005 it crashes, it's just a matter of how long.
Do you have any suggestion ?
PS: I already play with MaxCo and try lower case such as 0.4 or 0.2.
|courant number increasing, gravity current, settlingfoam|