Floating point error

atothep · August 9, 2011, 09:40

What does this error message mean? apparantly I have an invalid number.

stuart23 · August 10, 2011, 00:12

Ouch! The dreaded floating point error!

Your solution may have blown up, and you may be getting huge (unrealistic) pressures/velocities/densities etc...

What are you modelling? Maybe one of your BC's is wrong? Also, some solution methods are highly unstable, maybe try with more default methods (pressure based segregated with 1st order disc.).

Also, are the residuals converging on a solution? If not, try halving your under relaxation factors.

GOOD LUCK!

August 9, 2011, 09:40	Floating point error	#1
atothep New Member Alex Poyser Join Date: Jun 2011 Posts: 19 Rep Power: 14	What does this error message mean? apparantly I have an invalid number.

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August 10, 2011, 00:12		#2
stuart23 Senior Member Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 25	Ouch! The dreaded floating point error! Your solution may have blown up, and you may be getting huge (unrealistic) pressures/velocities/densities etc... What are you modelling? Maybe one of your BC's is wrong? Also, some solution methods are highly unstable, maybe try with more default methods (pressure based segregated with 1st order disc.). Also, are the residuals converging on a solution? If not, try halving your under relaxation factors. GOOD LUCK!