Mesh refinement with interFoam = solution that does no physical sense

lyna · January 19, 2016, 05:07

Hello
I have a problem in the mesh refinement.
I have a gas-liquid annular flow. the interface between the two fluids is thick (large), I want to reduce that by refining the mesh interface (r = 1e-3 micon) in this part of the canal, unfortunately when I refine my mesh I have a solution that does no physical sense !!!!!! I say do, help me please!!!!!!!!

thank you

Saideep · January 19, 2016, 10:29

It is probably caused due to spurious currents. This is a severe problem with interfoam. Some researchers says after a certain level of mesh refinement, the impact of these currents increase in which case the results get worser. That could be the case probably.

-Saideep

lyna · January 19, 2016, 12:05

thank you

is what's in interFoam another method for localization of the interface, which is more accurate.

Lyna

January 19, 2016, 05:07	Mesh refinement with interFoam = solution that does no physical sense	#1
lyna Member lynda Join Date: Oct 2009 Posts: 52 Rep Power: 17	Hello I have a problem in the mesh refinement. I have a gas-liquid annular flow. the interface between the two fluids is thick (large), I want to reduce that by refining the mesh interface (r = 1e-3 micon) in this part of the canal, unfortunately when I refine my mesh I have a solution that does no physical sense !!!!!! I say do, help me please!!!!!!!! thank you

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January 19, 2016, 10:29		#2
Saideep Senior Member Saideep Join Date: Apr 2015 Location: INDIA Posts: 203 Rep Power: 12	It is probably caused due to spurious currents. This is a severe problem with interfoam. Some researchers says after a certain level of mesh refinement, the impact of these currents increase in which case the results get worser. That could be the case probably. -Saideep

January 19, 2016, 12:05		#3
lyna Member lynda Join Date: Oct 2009 Posts: 52 Rep Power: 17	thank you is what's in interFoam another method for localization of the interface, which is more accurate. Lyna