Changing a particles behaviour during a simulation

[BillyBoy996]

Question

Question

Hi, I have a question regarding altering the behaviour of a particle within a simulation. In my case I have particles which are meant to represent Fish Aggregating Devices (FADs). The model is set up so that when these encounter a bathymetry with a shallow enough depth they become stranded and the particle is deleted. In the real world, the floating section of the FAD typically detaches and continues on its way, often washing up on a beach. However, this particle would now need to only be influenced by surface currents rather than the depth-averaged currents for the tail. Is there a way for these particles to change their behaviour during the course of the simulation?

[VeckoTheGecko]

Hi Billy, I think that this should be possible to do in a kernel. For example:

• add an extra particle variable "detached" which is initialised to 0 (i.e., false)
• Write a kernel that uses an if and else statement to check this detached behaviour, and then advect accordingly
• You can also have a MaybeDetach kernel which updates this detached state

Does that make sense?

(ps, excuse the late response - catching up on notifications now)