[lava12005]

Hi all,

I am simulating a towing tank and would like to do a simulation where the model start from rest (0m/s) to a test speed, say 1m/s.
I would like to know on how to ramp up the velocity in using the VOF model?

I tried to do a simple simulation where there is no model at all, and using the boundary condition as those specified in the DFBI Boat tutorial. Except that I change the Velocity Magnitude boundary condition using a field function of $Time

I am using dt of 0.01s, so after one time step, I expect the speed in the whole domain should be 0.01 m/s. But it is not and even after 100 iteration it is not converging to 0.01m/s

Does anyone can help me in this?