FLIP general questions + Lava question

[catchyid]

Hi,

In the flip solver, there are four inputs:

-First input is the FLIP object (which is where particles live).

-Second and Third inputs are particle velocity AND volume. This is where I can apply particles or volume velocity fields, i.e. the ONLY thing I am allowed to do here is to attach either: a) POP Forces  (i.e. should not use any particle source/location as particles already spawned by the first input), or b ) Volume velocity. Is this correct?

-Last input which is sourcing (post-solve). The obvious use for this is spawning particles in the FLIP Object. However, I find "Gas Temperature Update" can still change the particles temperature/viscosity over time. I found another tutorial which adds SOP solver to copy particles velocity based on proximity? My question: Can I add any solver that change any particle attributes (except for velocity) in this fourth input?

If anyone can verify my understanding of FLIP Solver above points, please do

Another question: I want to introduce Lava tendrils + bubbles in the simulation. IF my above understanding is correct then somehow I need to copy particles velocity based on proximity into Lava particles? Actually, I've seen one tutorial that does that through a SOP solver, but I want to make sure that this is the right way or maybe there is another better way?

Thanks,

[younglegend]

Particle attribute changes of any kind goes into second input. In your case of lava velocity, temperature, viscosity. Volume based changes (vdb collisions) in your case of bubbles goes to third input. The fourth input, i only use for sourcing but nothing else and this setup works for me very well. Take a look at the link, works pretty good for lava as well and ofcourse ben watts lava tutorial. Cheers!

https://youtu.be/yZ70SR9xHUE

 

[catchyid]

Thanks  Yes, I've looked at that tutorial before and it's very informative ...

The fourth input is used in this tutorial to change particles velocity via SOP solver, Just want to share