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January 20, 2011, 18:02 |
Modelling Slurry flow
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#1 |
New Member
sunny
Join Date: Jan 2011
Posts: 29
Rep Power: 15 |
My work is to use mixture model in multiphase flow to simulate slurry flow in straight pipe.The slurry is of water and 0.02476 in. sand particles(5 %). My simulation is not converging. I am not sure which drag functions and other functions to use. Has anyone simulated slurry flow with mixture model ? Please help .. or we should use eulerian model only ?
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January 21, 2011, 12:00 |
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#2 |
Member
Nikolopoulos Aristeidis
Join Date: Jan 2011
Location: Athens, Greece
Posts: 62
Rep Power: 15 |
Use mixture model is the slip velocity between phases is small and not important.
Use Euler if not. You are using an unsteady solver? |
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January 21, 2011, 12:15 |
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#3 |
New Member
sunny
Join Date: Jan 2011
Posts: 29
Rep Power: 15 |
The slip velocity between particles is not important, I have unchecked that option. I need to find the pressure drop in the pipe.I am not getting covergence with Euler model too, I tried Schiller naumann drag function and also gidaspow model. I am not sure which options of drag function to select in mixture model. Have you any experience in modelling slurry flow in straight pipes ?
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January 21, 2011, 12:17 |
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#4 |
New Member
sunny
Join Date: Jan 2011
Posts: 29
Rep Power: 15 |
I am not using unsteady solver, I am using steady state solver .. Should I use unsteady state ?
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January 21, 2011, 12:36 |
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#5 |
Member
Nikolopoulos Aristeidis
Join Date: Jan 2011
Location: Athens, Greece
Posts: 62
Rep Power: 15 |
I 'm experienced in Euler - Euler granular flows. I'm working in CERTH/ISFTA in EMMS scheme which is a sub-grid drag model.
I'm not familiar with mixture but i know its limitations. For sure go to unsteady even if the physics of the problem is steady. The only way to go steady is with these new pressure-velocity coupling schemes of Fluent 12 but i don't recommend them. |
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January 21, 2011, 12:44 |
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#6 |
New Member
sunny
Join Date: Jan 2011
Posts: 29
Rep Power: 15 |
Thanks, I had treid the Euler model. But I am not getting convergence,I am not sure where I am going wrong. Can you help me look at my case file, if you can. I am stuck in this problem for last 1 week and I am not going any ahead. If I am able to simulate with Euler model, it will be some progress. Will be really gratefull if you can help me with eulerian model ? pls let me know if it is covenient with you ? Thanks for your help ?
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October 28, 2014, 01:23 |
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#7 |
New Member
Ngô Ích Sơn
Join Date: Apr 2010
Location: Anseong, Korea
Posts: 8
Rep Power: 16 |
Dear Nikolopoulos,
I am coding the EMMS global using paper of W. Wang and J. Li (2007). I guess, your EMMS model is EMMS/matrix? What value of eps_mf? I used 0.4 Can you suggest which value of convergence criteria for hydrodynamics should be suitable? (I am using 1e-3, but it is not converged for eps_g < 0.6) Can you recommend how many step for each loop? (I am using 20(steps for eps_gc)x20(steps for eps_gf)x1(a_f = -9.8)x100 (for a_c)) Thank you and best regards, |
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January 18, 2017, 11:28 |
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#8 |
New Member
Prateek Jain
Join Date: Dec 2016
Posts: 2
Rep Power: 0 |
Hi, I'm working on modelling slurry flow through horizontal pipes. I can't converge it. Could anybody help? I've exhausted all my options :'(
Sent from my ONEPLUS A3003 using CFD Online Forum mobile app |
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January 19, 2017, 09:14 |
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#9 | |
Senior Member
Kushal Puri
Join Date: Nov 2013
Posts: 182
Rep Power: 12 |
Quote:
http://dspace.thapar.edu:8080/jspui/handle/10266/2899 |
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January 19, 2017, 09:19 |
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#10 | |
Senior Member
Kushal Puri
Join Date: Nov 2013
Posts: 182
Rep Power: 12 |
Quote:
http://dspace.thapar.edu:8080/jspui/handle/10266/2899 |
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September 11, 2018, 07:41 |
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#11 |
New Member
bhaskar
Join Date: Jan 2014
Posts: 3
Rep Power: 12 |
Dear Kushal,
I looking for modelling of slurry flow, I have found you have work on it. Unfortunately your thesis link is not working. Kindly can you send me your thesis on my personal email id techbhaz@gmail.com. Regards Bhaskar |
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September 11, 2018, 08:47 |
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#12 |
Senior Member
Kushal Puri
Join Date: Nov 2013
Posts: 182
Rep Power: 12 |
[QUOTE=techbhaskar;706051]Dear Kushal,
I looking for modelling of slurry flow, I have found you have work on it. Unfortunately your thesis link is not working. Kindly can you send me your thesis on my personal email id techbhaz@gmail.com. Regards Bhaskar[/QUO I sent to your mail id |
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May 6, 2019, 07:28 |
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#13 | |
New Member
Aashna Raj
Join Date: May 2019
Posts: 7
Rep Power: 7 |
Quote:
Your link is not working. Can you suggest me any way to view your thesis or if it's not too much, kindly send it to my email id: aashnaraj18@gmail.com Thanks |
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September 23, 2019, 23:51 |
Thseis link not working
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#14 |
New Member
ShreeJeeth
Join Date: Sep 2019
Location: Chennai
Posts: 2
Rep Power: 0 |
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Tags |
mixture model, multiphase modelling, multiphase pressure drop, slurry flow |
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