Species Transport Problem

Deside · March 10, 2010, 12:52

Hi all,

I am solving a species transport problem in a multi-phase flow and afer some iterations, i got this error: divergence detected in AMG solver: water-species-0

What could be the problem and how do i go about it.

Thank you

praveenkumar · March 11, 2010, 02:53

same problem occured for me also while simulation of mass transfer column for co2 to my knowledge just change the relaxtion value and continue the simualtion

coalgas · March 11, 2010, 03:06

Deside,
have you tried to change Under relaxation factor for water (Species)? from 1 to 0.75 or may be 0.25? sometime it works..

regards
Chetan

Deside · March 12, 2010, 14:58

Thank you Praveen and Chetan for the advise, i am implementing now and hope it will work.

March 10, 2010, 12:52	Species Transport Problem	#1
Deside New Member Deside Join Date: Aug 2009 Posts: 17 Rep Power: 17	Hi all, I am solving a species transport problem in a multi-phase flow and afer some iterations, i got this error: divergence detected in AMG solver: water-species-0 What could be the problem and how do i go about it. Thank you

March 11, 2010, 02:53	species problem	#2
praveenkumar New Member praveen Join Date: Jul 2009 Location: hyderabad Posts: 10 Rep Power: 17	same problem occured for me also while simulation of mass transfer column for co2 to my knowledge just change the relaxtion value and continue the simualtion __________________ Praveen Kumar G National Institute of Technology Tirchy

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Species Transport of Dye Tracer in Water	DarrenC	FLUENT	1	September 8, 2019 12:32
buoyancy and species transport	riccardo	FLUENT	1	September 15, 2006 08:14
species transport equation	daniel	FLUENT	0	June 22, 2005 09:51
species transport model	soundar	FLUENT	1	February 3, 2005 15:13

March 11, 2010, 03:06		#3
coalgas Member chétan Join Date: May 2009 Location: Australia Posts: 55 Rep Power: 17	Deside, have you tried to change Under relaxation factor for water (Species)? from 1 to 0.75 or may be 0.25? sometime it works.. regards Chetan

March 12, 2010, 14:58		#4
Deside New Member Deside Join Date: Aug 2009 Posts: 17 Rep Power: 17	Thank you Praveen and Chetan for the advise, i am implementing now and hope it will work.