multi phase flows....pls help...

karthik

i have a rectangular tank(2d) and it has one hole each in front and aft edges.water is entering in from one hole and going out from the other one. i'm trying to give pressurised air to enhance good circulation of water inside the tank even to the corners.i have external flow as well...so pls help me...how to do in VOF model and also pls suggest me any ideas by which the flow reaches corners also so that sediments settling in the corners are to be washed out....at the same time there shud be considerable percentage of velocity inside the tank compared to free stream velocity... pls help me guys....

thanks a lot.... regards

karthik