Peter Gebauer wrote:
In our simple simulation a constant drag force applied in opposite to gravity should be sufficient
No, that won't work, because the object will still accelerate indefinitely, or decelerate until it stops completely, whereas it should reach some terminal velocity.
we don't have to take in account all the other details of non-solid friction.
It doesn't have to be complicated, just a force proportional to the velocity of the object, with a coefficient depending on the fluid and the object concerned. -- Greg
