How to introduce mixture of air and oil in fluent

raghuramswaroop · July 14, 2018, 17:14

I am simulating in fluent to see the coolant effect on tool used in turning operation. I don't know how to introduce mixture of air and oil in the fluent. Can anyone guide me ? It would be of great help.

Thanks in advance.

maitray · July 15, 2018, 09:21

Hey mate, the description is very limited , but this is how you should approach, use eulerian 2 volume of fluid method,specify what are the phases, for eg phase 1 oil and phase 2 = air or vice versa. and in the phase interaction, use any one surface tension model (not sure) , and the challenging part is the solution initialisation , for that i need further info regarding the geometry, i hope it helped.

raghuramswaroop · July 15, 2018, 13:13

Thank you very much. Here is the geometry of the part. There is a small surface you can see at the edge. It is the tool tip and it is where I am giving 1090 kelvin as temperature.

I am posing links for the geometry for your better understanding.

https://drive.google.com/open?id=1oA...9vEhWBUjmHkLAu

https://drive.google.com/open?id=1U7...iDsoD6nvzcxlCA

https://drive.google.com/open?id=1qe...qMEfkAzM6O0Nhz

maitray · July 15, 2018, 13:33

If it is a steady flow, it doesn’t matter at all whatever fluid you are using regarding this simulation since i am assuming you are using fixed temperature boundary, moreover if you are using transient , and if i assume that there is a pipe flow from where the oil is coming ( most common) , then you need euler multiphase volume of fluid method, i hope it helped.

raghuramswaroop · July 15, 2018, 17:56

Ok. Thank you.

kiarashniroumand · August 22, 2018, 09:45

hi everyone i am working on a multiphase fluid simulation in fluent . that is pipe that have a saturated vapor with a cooled wall . after simulation with a acceptable residuals and the temperature contours was good but about volume of fraction of each phase there is no good results and all fluid domain have a constant volume fraction . indeed i wanna calculate amount of condensed liquid . is there anyone can help me ? its so necessary for me ...

and also i m sorry of my bad english :|

here is my email : kiarashniroumand@gmail.com

July 14, 2018, 17:14	How to introduce mixture of air and oil in fluent	#1
raghuramswaroop New Member Swaroop Join Date: Apr 2018 Posts: 21 Rep Power: 8	I am simulating in fluent to see the coolant effect on tool used in turning operation. I don't know how to introduce mixture of air and oil in the fluent. Can anyone guide me ? It would be of great help. Thanks in advance.

July 15, 2018, 09:21		#2
maitray New Member Maitray sharma Join Date: Aug 2017 Posts: 7 Rep Power: 8	Hey mate, the description is very limited , but this is how you should approach, use eulerian 2 volume of fluid method,specify what are the phases, for eg phase 1 oil and phase 2 = air or vice versa. and in the phase interaction, use any one surface tension model (not sure) , and the challenging part is the solution initialisation , for that i need further info regarding the geometry, i hope it helped. khaledhmz likes this.

August 22, 2018, 09:45	ansys fluent multiphase analysis	#6
kiarashniroumand New Member kiarash Join Date: Aug 2018 Posts: 3 Rep Power: 7	hi everyone i am working on a multiphase fluid simulation in fluent . that is pipe that have a saturated vapor with a cooled wall . after simulation with a acceptable residuals and the temperature contours was good but about volume of fraction of each phase there is no good results and all fluid domain have a constant volume fraction . indeed i wanna calculate amount of condensed liquid . is there anyone can help me ? its so necessary for me ... and also i m sorry of my bad english :\| here is my email : kiarashniroumand@gmail.com

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July 15, 2018, 13:13		#3
raghuramswaroop New Member Swaroop Join Date: Apr 2018 Posts: 21 Rep Power: 8	Thank you very much. Here is the geometry of the part. There is a small surface you can see at the edge. It is the tool tip and it is where I am giving 1090 kelvin as temperature. I am posing links for the geometry for your better understanding. https://drive.google.com/open?id=1oA...9vEhWBUjmHkLAu https://drive.google.com/open?id=1U7...iDsoD6nvzcxlCA https://drive.google.com/open?id=1qe...qMEfkAzM6O0Nhz

July 15, 2018, 13:33		#4
maitray New Member Maitray sharma Join Date: Aug 2017 Posts: 7 Rep Power: 8	If it is a steady flow, it doesn’t matter at all whatever fluid you are using regarding this simulation since i am assuming you are using fixed temperature boundary, moreover if you are using transient , and if i assume that there is a pipe flow from where the oil is coming ( most common) , then you need euler multiphase volume of fluid method, i hope it helped.

July 15, 2018, 17:56		#5
raghuramswaroop New Member Swaroop Join Date: Apr 2018 Posts: 21 Rep Power: 8	Ok. Thank you.