[sandisk]

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 ?

[Nikolopoulos]

Use mixture model is the slip velocity between phases is small and not important.

Use Euler if not.

You are using an unsteady solver?

[sandisk]

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 ?

[sandisk]

I am not using unsteady solver, I am using steady state solver .. Should I use unsteady state ?

[Nikolopoulos]

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.

[sandisk]

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 ?

[manowars]

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,

[prateekj05]

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

[Kushal Puri]

Originally Posted by sandisk

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 ?

I did thesis on this, you can refer this link

http://dspace.thapar.edu:8080/jspui/handle/10266/2899

[Kushal Puri]

Originally Posted by prateekj05

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

I did thesis on this, you can refer this link

http://dspace.thapar.edu:8080/jspui/handle/10266/2899

[techbhaskar]

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

[Kushal Puri]

[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

[aashna@iitp]

Originally Posted by Kushal Puri

I did thesis on this, you can refer this link

http://dspace.thapar.edu:8080/jspui/handle/10266/2899

Sir,
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

[ShreeJeeth]

Originally Posted by Kushal Puri

I did thesis on this, you can refer this link

http://dspace.thapar.edu:8080/jspui/handle/10266/2899

Can u send it to my id : iamsj18@gmail.com ?? Or can u update the link?