VOF interFoam - Strange behaviour in a micro T-junction

Anik122 · May 21, 2018, 09:17

could anyone please upload the case file ?
It could be helpful for others.

maryam74121 · August 27, 2019, 12:18

hi
i am simulating a model with two vents and one outlet.the water patched into the main chamber and air can goes in and out from two vents. i want to simulating water flow in channel.the model in 3d and modeled in fluent
i dont have any parameters in vents what is the best boundary condition for them? the vents are in the atmosphere pressure but the whole model is rotating so i dont know the gauge pressure=0 in correct for these vents or not?
i use the out flow for outlet which it is incompatible with pressure boundaries.
i cant see the right flow in channel is there any one could help me?
the residuals cant decrease enough and continuity residuals are in order of 10
i appreciate your recommendations

Santhosh91 · July 28, 2023, 15:11

Hello Pablo,

It is been a while since the thread but your subject is really close to my research. I am simulating two phase flow in micro T-junction too and using interFoam. By mimicking experimental conditions, I manage to get emulsion of the same length/shape as my experiments but not the same mean velocity or periodic generation. Did you encounter those difficulties as well ? Or do you have any advice/hints ?

Thanks for your time!

Sincerely,
Santhosh

August 27, 2019, 12:18	vof modeling in micro channel in fluent	#22
maryam74121 New Member maryam Join Date: Jul 2017 Posts: 10 Rep Power: 9	hi i am simulating a model with two vents and one outlet.the water patched into the main chamber and air can goes in and out from two vents. i want to simulating water flow in channel.the model in 3d and modeled in fluent i dont have any parameters in vents what is the best boundary condition for them? the vents are in the atmosphere pressure but the whole model is rotating so i dont know the gauge pressure=0 in correct for these vents or not? i use the out flow for outlet which it is incompatible with pressure boundaries. i cant see the right flow in channel is there any one could help me? the residuals cant decrease enough and continuity residuals are in order of 10 i appreciate your recommendations

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May 21, 2018, 09:17		#21
Anik122 New Member Anik Sarker Join Date: Oct 2017 Location: Dhaka, Bangladesh Posts: 8 Rep Power: 9	could anyone please upload the case file ? It could be helpful for others.

July 28, 2023, 15:11		#23
Santhosh91 Member Santhosh Join Date: Nov 2021 Posts: 44 Rep Power: 4	Hello Pablo, It is been a while since the thread but your subject is really close to my research. I am simulating two phase flow in micro T-junction too and using interFoam. By mimicking experimental conditions, I manage to get emulsion of the same length/shape as my experiments but not the same mean velocity or periodic generation. Did you encounter those difficulties as well ? Or do you have any advice/hints ? Thanks for your time! Sincerely, Santhosh