Relaxation factor

Benzaa · August 5, 2009, 11:15

Does any one know a good algorithm for auto-adjusting a relaxation factor? I have an algorithm that is having some problems reaching the solution at low residuals. So far, I have a small routine that adjusts the value of the relaxation coefficient based on the shakingness of the residuals for a variable (in this case gas temperature). I was wondering if someone knows a good paper or another reference for a better way to auto-adjust a relaxation factor.

Rami · August 18, 2009, 08:27

I vaguely recall a paper by Norberto Fueyo using fuzzy logic for such a problem in the context of PHOENICS. Try googling.

August 5, 2009, 11:15	Relaxation factor	#1
Benzaa New Member Fernando Herrera Join Date: Mar 2009 Posts: 18 Rep Power: 17	Does any one know a good algorithm for auto-adjusting a relaxation factor? I have an algorithm that is having some problems reaching the solution at low residuals. So far, I have a small routine that adjusts the value of the relaxation coefficient based on the shakingness of the residuals for a variable (in this case gas temperature). I was wondering if someone knows a good paper or another reference for a better way to auto-adjust a relaxation factor.

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August 18, 2009, 08:27		#2
Rami Senior Member Rami Ben-Zvi Join Date: Mar 2009 Posts: 155 Rep Power: 17	I vaguely recall a paper by Norberto Fueyo using fuzzy logic for such a problem in the context of PHOENICS. Try googling.