Forces in multiphase Simulation

roadrunner_22 · November 26, 2018, 06:18

Hi,

I am currently working on water jets. I want to calculate the force on a wall.
Hence, I'm only interested in the contribution of the water phase.

I already read multiple posts about this topic, but I am not sure if this tool works for my case.

Wall forces in interFoam

I found a nice way to do it in Paraview, but I would like to calculate the force in every tilmestep.

https://www.simscale.com/docs/conten...esMoments.html

The forces functionObject seems to calculate it in a different way and it seems that it's something like a force density?

How should I declare rhoInf to get realistic results?

Thanks!

brammekeuh987 · February 18, 2019, 15:35

Hi

So did you get anywhere yet

?

I also found this post: Force calculation in multiphase simulations
here they adapt the existing force calculation function object in order to fit for the interFoam solver. I heaven't dived into it yet, but as I understood it, this would only be applicable for laminar cases. But I don't think your case is laminar, is it?

Cheers!
Bram

November 26, 2018, 06:18	Forces in multiphase Simulation	#1
roadrunner_22 New Member Join Date: Nov 2017 Posts: 3 Rep Power: 9	Hi, I am currently working on water jets. I want to calculate the force on a wall. Hence, I'm only interested in the contribution of the water phase. I already read multiple posts about this topic, but I am not sure if this tool works for my case. Wall forces in interFoam I found a nice way to do it in Paraview, but I would like to calculate the force in every tilmestep. https://www.simscale.com/docs/conten...esMoments.html The forces functionObject seems to calculate it in a different way and it seems that it's something like a force density? How should I declare rhoInf to get realistic results? Thanks!

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February 18, 2019, 15:35		#2
brammekeuh987 Member Bram Kerkhofs1 Join Date: Oct 2016 Posts: 30 Rep Power: 10	Hi So did you get anywhere yet ? I also found this post: Force calculation in multiphase simulations here they adapt the existing force calculation function object in order to fit for the interFoam solver. I heaven't dived into it yet, but as I understood it, this would only be applicable for laminar cases. But I don't think your case is laminar, is it? Cheers! Bram