[vahidbarati447]

Hello, I am a beginner and I am simulating a lock-exchange flow with two regions without any inlet and outlet, in one region there is a transparent fluid and in the other side there are two different particles, each of which occupies 50% of the volume of the particle region. but I don't know how to create stationary particles at zero moment with the properties I want in a volume. If possible, please help me. Thank you for your attention.