of1812 vs of6

joshmccraney · January 20, 2022, 17:12

What is the difference between interFoam on OpenFOAM v1812 and OpenFOAM 6.0? I am getting very different results on a simulation. Specifically, it's a zero gravity surface tension dominated flow. Is there an innate difference between these solvers in how surface tension is handled?

NLeb · January 22, 2022, 07:11

Which solver are you using within each version? interFoam-based or Eulerian?
In ESI-OpenFOAM (you have v1812) there is a solver called interIsoFoam which captures sharp interfaces between phases much better than its MULES-based counterparts (e.g. interFoam). This might be what you are after, although there are also some issues with modelling surface tension in general in OpenFOAM that have not yet been resolved. https://develop.openfoam.com/Develop.../-/issues/2052

joshmccraney · January 24, 2022, 00:11

Quote:

Originally Posted by NLeb

Which solver are you using within each version? interFoam-based or Eulerian?
In ESI-OpenFOAM (you have v1812) there is a solver called interIsoFoam which captures sharp interfaces between phases much better than its MULES-based counterparts (e.g. interFoam). This might be what you are after, although there are also some issues with modelling surface tension in general in OpenFOAM that have not yet been resolved. https://develop.openfoam.com/Develop.../-/issues/2052

interFoam for both. I'm getting very different results

January 20, 2022, 17:12	of1812 vs of6	#1
joshmccraney Senior Member Josh McCraney Join Date: Jun 2018 Posts: 220 Rep Power: 9	What is the difference between interFoam on OpenFOAM v1812 and OpenFOAM 6.0? I am getting very different results on a simulation. Specifically, it's a zero gravity surface tension dominated flow. Is there an innate difference between these solvers in how surface tension is handled?

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January 22, 2022, 07:11		#2
NLeb New Member Nik Join Date: Apr 2021 Posts: 7 Rep Power: 5	Which solver are you using within each version? interFoam-based or Eulerian? In ESI-OpenFOAM (you have v1812) there is a solver called interIsoFoam which captures sharp interfaces between phases much better than its MULES-based counterparts (e.g. interFoam). This might be what you are after, although there are also some issues with modelling surface tension in general in OpenFOAM that have not yet been resolved. https://develop.openfoam.com/Develop.../-/issues/2052