I see. But is there a way to start a simulation with particles present in the domain already at t=0s? Ideally in a transient cfd dpm injection, the injection starts at t=0s and continues until the specified time limit. Alternatively, I am looking to cut down on the injection time and just start my simulation with particles already inside the domain. To summarize, my 2D rectangular domain should have 10,000 particles in it after initializing the setup. This is my 2D domain.