define a time dependent inlet velocity
 

Since nobody can figure out how to make fluent initialize the Cell Zone Conditions properly to contain a mixture, I will use this workaround.

I figure I can have the inlet run long enough to fill the interior with the mixture since fluent cannot start the simulation with the interior full of the mixture as an initial condition. But to do this I need to have the inlet velocity run for, say, 5 seconds to fill the tank, then shut off for the rest of the simulation.

So is there a simple way to have fluent run at v0 for only 5 seconds then set the inlet velocity to 0?

Thanks