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AU-BCE-EE / tric-fil-mod

A trickling filter model to simulate air treatment, written in Python
GNU General Public License v3.0
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Liquid recirculation #15

Open sashahafner opened 1 year ago

sashahafner commented 1 year ago

Try to work on this over the next week.

sashahafner commented 12 months ago

@afeilberg see demo 12. I had to reduce the reaction and mass transfer rates to see a clear effect. The liquid profile plot looks right, I think:

image

The blue line has recirc = True, red does not (others have no reaction, with and without recirculation). The blue line starts (at inlet) a bit above the outlet concentration.

sashahafner commented 12 months ago

This did not require much new code. In the rates() function the inlet liquid concentration clin is set to the concentration in the last layer around line 93:

  # Get outlet liquid phase concentration to use at inlet if recirc = True
  if recirc:
      if counter:
          oi = 0
      else:
          oi = nc - 1
      clin = ccl[oi]

It is meant to work for countercurrent flow also, but I have not tested it.

sashahafner commented 11 months ago

Comment from @afeilberg : coudl be nice to have a delay to represent retention time in recirculation system. Or buffer tank.

Buffer tank could actually be easy(ish). Could include as new state variables.

Anders says we could add reactions in buffer tank.