floating point error

March 1, 2002, 02:40

Hi,while running 2D problem with multiphase (air and water)I came across the following error using k-e rng ,vof-implicit model Error: Floating point error: invalid number

Error Object: () i've been getting these errors for so many combinations...plz give me some suggestions.Thanks.Mavinakere.

March 1, 2002, 06:32

Try altering the under relaxation factors for whichever residuals are 'blowing up'. Also, if its an unsteady simulation (as it probably should be), try decreasing the time step a little.

March 1, 2002, 17:10

i tried altering the underrelaxation factors and then i get convergence detected in AMG solver kinda error.And my problem is with steady state...so no time steps at all.though i want to solve unsteady ,i get errors in the initial level(at say 20-30 iterations)plz give me more parameters to check with.thanks.

March 1, 2002, 18:22

A) Use double precision B) Use different mesh size DC

March 1, 2002, 02:40	floating point error	#1
Mavinakere Guest Posts: n/a	Hi,while running 2D problem with multiphase (air and water)I came across the following error using k-e rng ,vof-implicit model Error: Floating point error: invalid number Error Object: () i've been getting these errors for so many combinations...plz give me some suggestions.Thanks.Mavinakere.

March 1, 2002, 06:32	Re: floating point error	#2
Atholl Guest Posts: n/a	Try altering the under relaxation factors for whichever residuals are 'blowing up'. Also, if its an unsteady simulation (as it probably should be), try decreasing the time step a little.

March 1, 2002, 17:10	Re: floating point error	#3
Mavinakere Guest Posts: n/a	i tried altering the underrelaxation factors and then i get convergence detected in AMG solver kinda error.And my problem is with steady state...so no time steps at all.though i want to solve unsteady ,i get errors in the initial level(at say 20-30 iterations)plz give me more parameters to check with.thanks.

March 1, 2002, 18:22	Re: floating point error	#4
david Guest Posts: n/a	A) Use double precision B) Use different mesh size DC

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