DQMOM multiphase limitation in Fluent

pannsave · February 23, 2015, 06:54

Hi All,

I was just wondering whether I can do multiphase simulation using DQMOM for three particle size distributions (3 phases) along with 2 phases. It shows totally five phases. I am not sure whether the recent version of fluent has the capability of handling more than 4 phases. Could anyone please advice me. Even I was trying to setup the model, It shows the error message of
PB' s Sauter_d: case not handled.
So i was just wondering whether something is wrong with model setup or fluent multiphase limitation for DQMOM.
Thanks

Regards
Pannsave

vasava · February 23, 2015, 09:35

What version of fluent do you have?

pannsave · February 23, 2015, 09:41

Our institution has both 14.0 and 15.0 version

vasava · February 23, 2015, 10:04

If I am not wrong there is a limitation especially if you are using the discrete setup. You can have bins for only one secondary phase. However if you switch to the inhomogeneous setup you can have bins for more than one secondary phases.

I am no expert with the population balance but hope this helps.

pannsave · February 23, 2015, 10:31

Dear Vasava,

Thanks for reply. I am using Eulerian with population balance model. I think I may not able to use the option that you have mentioned. Is that correct.

Regards
Pannsave

vasava · February 24, 2015, 02:23

I think you can use all the options with Eulerian multiphase setup.

pannsave · February 24, 2015, 06:15

Dear Vasava,

I would be grateful to you if you could the explain to me in detail about setup.
Mean time, I have checked DQMOM restriction in fluent manual. It is mentioned that "The DQMOM method is restricted to a four-phase system, of which three secondary phases are directly involved in the DQMOM computation".
It seems it is difficult to setup the model.

Actually in my problem, I have sand, fluidisation gas and biomass (DQMOM phase- 3 sizes), so totally 5 phases. I am still wondering to implement this problem in fluent.

I would be grateful to you if you could explain the model setup

Thanks in advance

Regards
Pannsave

bradlee · February 25, 2015, 03:16

Is there anyone who know to set up the initial moments?

Somebody help me!!

Gujun · July 27, 2017, 11:26

Quote:

Originally Posted by pannsave

Dear Vasava,

I would be grateful to you if you could the explain to me in detail about setup.
Mean time, I have checked DQMOM restriction in fluent manual. It is mentioned that "The DQMOM method is restricted to a four-phase system, of which three secondary phases are directly involved in the DQMOM computation".
It seems it is difficult to setup the model.

Actually in my problem, I have sand, fluidisation gas and biomass (DQMOM phase- 3 sizes), so totally 5 phases. I am still wondering to implement this problem in fluent.

I would be grateful to you if you could explain the model setup

Thanks in advance

Regards
Pannsave

Dear pannsave,
I am writing to ask you if the DQMOM can be used to deal with the 5-phases?
Thank you.

February 23, 2015, 06:54	DQMOM multiphase limitation in Fluent	#1
pannsave New Member pannsave Join Date: Apr 2009 Posts: 25 Rep Power: 18	Hi All, I was just wondering whether I can do multiphase simulation using DQMOM for three particle size distributions (3 phases) along with 2 phases. It shows totally five phases. I am not sure whether the recent version of fluent has the capability of handling more than 4 phases. Could anyone please advice me. Even I was trying to setup the model, It shows the error message of PB' s Sauter_d: case not handled. So i was just wondering whether something is wrong with model setup or fluent multiphase limitation for DQMOM. Thanks Regards Pannsave

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February 23, 2015, 09:35		#2
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 24	What version of fluent do you have?

February 23, 2015, 09:41		#3
pannsave New Member pannsave Join Date: Apr 2009 Posts: 25 Rep Power: 18	Our institution has both 14.0 and 15.0 version

February 23, 2015, 10:04		#4
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 24	If I am not wrong there is a limitation especially if you are using the discrete setup. You can have bins for only one secondary phase. However if you switch to the inhomogeneous setup you can have bins for more than one secondary phases. I am no expert with the population balance but hope this helps.

February 23, 2015, 10:31		#5
pannsave New Member pannsave Join Date: Apr 2009 Posts: 25 Rep Power: 18	Dear Vasava, Thanks for reply. I am using Eulerian with population balance model. I think I may not able to use the option that you have mentioned. Is that correct. Regards Pannsave

February 24, 2015, 02:23		#6
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 24	I think you can use all the options with Eulerian multiphase setup.

February 24, 2015, 06:15		#7
pannsave New Member pannsave Join Date: Apr 2009 Posts: 25 Rep Power: 18	Dear Vasava, I would be grateful to you if you could the explain to me in detail about setup. Mean time, I have checked DQMOM restriction in fluent manual. It is mentioned that "The DQMOM method is restricted to a four-phase system, of which three secondary phases are directly involved in the DQMOM computation". It seems it is difficult to setup the model. Actually in my problem, I have sand, fluidisation gas and biomass (DQMOM phase- 3 sizes), so totally 5 phases. I am still wondering to implement this problem in fluent. I would be grateful to you if you could explain the model setup Thanks in advance Regards Pannsave

February 25, 2015, 03:16		#8
bradlee New Member hyunkwonlee Join Date: Feb 2015 Posts: 3 Rep Power: 12	Is there anyone who know to set up the initial moments? Somebody help me!!