Hi, everyone. I'm currently working on an particle tracing problem in which the particle density is changing with time. Therefore, I need to calculate the particel density every time step (or every several time step). How can I solve this problem?
I want to solve this problem like this: pause the model at each time step==>caculate and update the particle density==>continue the model.
By the way, the varition of the particle density is not a simple function of time, and its value of the (i+1)th step has relationship with the ith step. I've tried the time discrete study, but it dosen't work in particle tracing (only Error: Time derivative only allowed with respect to mesh time)?
Anyone can help me? Thanks a lot in advance! Best wishes!
I want to solve this problem like this: pause the model at each time step==>caculate and update the particle density==>continue the model.
By the way, the varition of the particle density is not a simple function of time, and its value of the (i+1)th step has relationship with the ith step. I've tried the time discrete study, but it dosen't work in particle tracing (only Error: Time derivative only allowed with respect to mesh time)?
Anyone can help me? Thanks a lot in advance! Best wishes!