multiple particle tracers from single (programmable) pointsource

Here is what I’m able to generate with your data:

Please note that:

  1. Your data is 2D, you need to project your point source on it (using a calculator)
  2. Your time resolution is very low, resulting streamlines are not great
  3. Your velocity is quite high, I had to divide it by 10 to keep the particle in domain long enough to trace something
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