Which lagrangian method is best? (for me)

Adamkat · February 28, 2017, 06:12

Hi Foamers!

I am trying to simulate a microfluidics setup we are investigating.
The setup is composed of a microscopic channel running a dilute solution of cells of known size.

My assumptions are:

1) incompressible
2) laminar
3) one-way coupling

I came up with the following solvers:
icoUncoupledKinematicParcelFoam
(simple)ReactingParcelFoam

Could you please explain the difference between the two? is there is another solver which is better?

Another question: I solved my flow (without particles) using simpleFoam, can I take the results and use them as data for the lagrangian solver?

Thanks,
Adam

decah · February 28, 2017, 15:55

Hi Adam,

icoUncoupledKinematicParcelFoam sounds fine if you just have one type of particle that doesn't react.

You can take the results from simpleFoam and use the mapFields utility to use the steady state results as your initial condition in the lagrangian simulation.

Hope this helps!

Declan

Adamkat · March 1, 2017, 06:05

Thanks Declan!
mapFields worked. Now I'm stuck with injecting the particles. (I posted a new thread)

February 28, 2017, 06:12	Which lagrangian method is best? (for me)	#1
Adamkat New Member Adam Katz Join Date: Feb 2017 Posts: 23 Rep Power: 9	Hi Foamers! I am trying to simulate a microfluidics setup we are investigating. The setup is composed of a microscopic channel running a dilute solution of cells of known size. My assumptions are: 1) incompressible 2) laminar 3) one-way coupling I came up with the following solvers: icoUncoupledKinematicParcelFoam (simple)ReactingParcelFoam Could you please explain the difference between the two? is there is another solver which is better? Another question: I solved my flow (without particles) using simpleFoam, can I take the results and use them as data for the lagrangian solver? Thanks, Adam

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February 28, 2017, 15:55		#2
decah Member Declan Join Date: Oct 2016 Location: Ireland Posts: 40 Rep Power: 9	Hi Adam, icoUncoupledKinematicParcelFoam sounds fine if you just have one type of particle that doesn't react. You can take the results from simpleFoam and use the mapFields utility to use the steady state results as your initial condition in the lagrangian simulation. Hope this helps! Declan

March 1, 2017, 06:05		#3
Adamkat New Member Adam Katz Join Date: Feb 2017 Posts: 23 Rep Power: 9	Thanks Declan! mapFields worked. Now I'm stuck with injecting the particles. (I posted a new thread)