MRF and Euler model

DropsandSimulations · September 4, 2009, 10:10

Hello,

I want to simulate a stirrer configuration with a continous and a dispersed phase (patricles, bubbles or droplets).
I found an MRFinterFoam configuration in the tutorials but for my case with dispersed particles, I think that the euler model would be best.

Is their an MRFtwoPhaseEulerFoam or any model like this published or how can I create one?

Thanks in advance!

Mark

gwierink · September 4, 2009, 16:00

Hi Mark,

I am modelling aerated stirred tanks and am trying to get an MRF version of twoPhaseEulerFoam to work. I have a model, but in my case the problem seems to be with the turbulence (since standard twoPhaseEulerFoam does not allow turbulence). I think I will work something out soon and I will post it.

Best regards,

Gijs

PS what are your flow conditions and what is the dispersed volume fraction you're interested in?

DropsandSimulations · September 7, 2009, 02:25

Hello again,

thanks for writing me. Hi have a stirred tank, but I have a dispersed droplet phase in it. The dispersed volume fraction should be around 0.05 up to 0.15, depending on the flow conditions. The flow conditions are a counter current flow what makes it not easier to calculate

But all in all, the main conditions will be nearly the same (turbulence model, euler euler and so on). I have made some PIV measurements and calculated the whole thing with FLUENT. But to get away from the commercial software, I want to try it out with OpenFOAM.

Cu

Mark

gwierink · September 7, 2009, 03:40

Hi Mark,

Well, I'm still working to get MRFTwoPhaseEulerFoam to work and not explode. But in the mean time I found some nice documentation on bubbleFoam here, that probably can be used for your case.

Best regards,

Gijs

DropsandSimulations · September 7, 2009, 17:09

hello, I got internet .. .yeaahh... I just checked my volume fraction. It is a little bit higher then I mentioned before (around, 0,3

. The other value was only a test case.

I just took a look at the bubbleFoam Solver. That does not seem too bad. But still no MRF implementation ready... So I think, I have to take a closer look as soon as I am back.

theja · October 18, 2011, 05:02

please if you have any tutorial on MRFInterFoam then please mail it to thejaraju.r@axiomconsult.com

kmooney · October 20, 2011, 09:56

If you have OpenFOAM-1.6-ext installed you can find a tutorial along with the solver source here:

~/OpenFOAM/OpenFOAM-1.6-ext/tutorials/multiphase/interFoam/MRFInterFoam

I'm not sure if the solver is distributed in non -extend openfoam releases or not however.

theja · October 21, 2011, 00:18

whether mrfinterfoam suits the solving of on room airpurifier or not, if not which solver is better to solve this tyoe problem

gwierink · October 21, 2011, 01:27

Quote:

Originally Posted by kmooney

I'm not sure if the solver is distributed in non -extend openfoam releases or not however.

Yep, there are:
$FOAM_TUTORIALS/multiphase/MRFInterFoam
$FOAM_TUTORIALS/multiphase/MRFMultiphaseInterFoam

sharonyue · December 20, 2012, 10:26

Quote:

Originally Posted by gwierink

Hi Mark,

I am modelling aerated stirred tanks and am trying to get an MRF version of twoPhaseEulerFoam to work. I have a model, but in my case the problem seems to be with the turbulence (since standard twoPhaseEulerFoam does not allow turbulence). I think I will work something out soon and I will post it.

Best regards,

Gijs

PS what are your flow conditions and what is the dispersed volume fraction you're interested in?

Hi Gijs

Recently I am working on simulating stirred tank , but I failed and being stuck by mesh problem. You can see it here. http://www.cfd-online.com/Forums/ope...tml#post397546
Have you ever simulated you condition successfully?

September 4, 2009, 10:10	MRF and Euler model	#1
DropsandSimulations New Member Join Date: Sep 2009 Posts: 6 Rep Power: 16	Hello, I want to simulate a stirrer configuration with a continous and a dispersed phase (patricles, bubbles or droplets). I found an MRFinterFoam configuration in the tutorials but for my case with dispersed particles, I think that the euler model would be best. Is their an MRFtwoPhaseEulerFoam or any model like this published or how can I create one? Thanks in advance! Mark

September 7, 2009, 03:40		#4
gwierink Senior Member Gijsbert Wierink Join Date: Mar 2009 Posts: 383 Rep Power: 18	Hi Mark, Well, I'm still working to get MRFTwoPhaseEulerFoam to work and not explode. But in the mean time I found some nice documentation on bubbleFoam here, that probably can be used for your case. Best regards, Gijs raj kumar saini likes this.

October 18, 2011, 05:02	MRFInterFoam	#6
theja New Member theja Join Date: Oct 2011 Posts: 17 Rep Power: 14	please if you have any tutorial on MRFInterFoam then please mail it to thejaraju.r@axiomconsult.com

October 21, 2011, 00:18	MRFInterFoam	#8
theja New Member theja Join Date: Oct 2011 Posts: 17 Rep Power: 14	whether mrfinterfoam suits the solving of on room airpurifier or not, if not which solver is better to solve this tyoe problem

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
MRF and Euler model	DropsandSimulations	OpenFOAM Running, Solving & CFD	0	September 4, 2009 05:20

September 4, 2009, 16:00		#2
gwierink Senior Member Gijsbert Wierink Join Date: Mar 2009 Posts: 383 Rep Power: 18	Hi Mark, I am modelling aerated stirred tanks and am trying to get an MRF version of twoPhaseEulerFoam to work. I have a model, but in my case the problem seems to be with the turbulence (since standard twoPhaseEulerFoam does not allow turbulence). I think I will work something out soon and I will post it. Best regards, Gijs PS what are your flow conditions and what is the dispersed volume fraction you're interested in?

September 7, 2009, 02:25		#3
DropsandSimulations New Member Join Date: Sep 2009 Posts: 6 Rep Power: 16	Hello again, thanks for writing me. Hi have a stirred tank, but I have a dispersed droplet phase in it. The dispersed volume fraction should be around 0.05 up to 0.15, depending on the flow conditions. The flow conditions are a counter current flow what makes it not easier to calculate But all in all, the main conditions will be nearly the same (turbulence model, euler euler and so on). I have made some PIV measurements and calculated the whole thing with FLUENT. But to get away from the commercial software, I want to try it out with OpenFOAM. Cu Mark

September 7, 2009, 17:09		#5
DropsandSimulations New Member Join Date: Sep 2009 Posts: 6 Rep Power: 16	hello, I got internet .. .yeaahh... I just checked my volume fraction. It is a little bit higher then I mentioned before (around, 0,3 . The other value was only a test case. I just took a look at the bubbleFoam Solver. That does not seem too bad. But still no MRF implementation ready... So I think, I have to take a closer look as soon as I am back.

October 20, 2011, 09:56		#7
kmooney Senior Member Kyle Mooney Join Date: Jul 2009 Location: San Francisco, CA USA Posts: 323 Rep Power: 17	If you have OpenFOAM-1.6-ext installed you can find a tutorial along with the solver source here: ~/OpenFOAM/OpenFOAM-1.6-ext/tutorials/multiphase/interFoam/MRFInterFoam I'm not sure if the solver is distributed in non -extend openfoam releases or not however.