Species Transport Problem

Deside · March 10, 2010, 11:52

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, 01:53

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, 02:06

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, 13:58

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

March 10, 2010, 11:52	Species Transport Problem	#1
Deside New Member Deside Join Date: Aug 2009 Posts: 17 Rep Power: 16	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, 01:53	species problem	#2
praveenkumar New Member praveen Join Date: Jul 2009 Location: hyderabad Posts: 10 Rep Power: 16	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

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March 11, 2010, 02:06		#3
coalgas Member chétan Join Date: May 2009 Location: Australia Posts: 55 Rep Power: 16	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, 13:58		#4
Deside New Member Deside Join Date: Aug 2009 Posts: 17 Rep Power: 16	Thank you Praveen and Chetan for the advise, i am implementing now and hope it will work.