Convection project update 02-17-2020: clump test

Physical parameters

  • ambient density = 1e-8
  • ambient pressure = 1e6
  • clump density = 1e-7
  • clump pressure = 1e6
  • clump radius = 20
  • wind density = 1e-8
  • wind pressure = 1e6
  • wind velocity = 1e7 (stability test v = 0)
  • box side length > 200

Test 1: clump stability

Test 2: EOS resolution

running on 10 cores cell-update is a very very very rough approximate.. +- 1000

Run # EOS dlogx cell-update total run time
run 0 ideal ~ 14000 02:21:17
run 1 table 0.10 ~ 11000 03:27:45
run 2 table 0.05 ~ 11000 03:14:51
run 3 table 0.02 ~ 11000 02:56:45

Conclusion:

  • increasing table resolution doesn't increase run time
  • need higher resolution tables for the simulation to be physical

movie: ​https://www.pas.rochester.edu/~yishengtu/research_files/CEE_gp_meeting_02172020/fig_dir_all/combined.gif

run 3 run 0
run 2 run 1

Thoughts

  • high resolution tables take looooong time to generate for dlogx = 0.01, it's taking ~ 8 hr to generate one Z (depending on core number)
  • Need a new interpolate function (square/cubic)?
  • Need a higher resolution table? How high?
  • Since we need high resolution table, how to setup? build a library?

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