floating point error when starting to iterate

June 1, 2006, 13:37

Hi!

I know, there is a lot of discussion about the floating point error, and there are a lot of answers.

But, I can not find a sollution to my problem:

I have a 3D geometry with about 1.000.000 cells. It is incompressible, air. I tried all solvers, but every time the same: The floating point error comes when I am starting to iterate. Not even the first iteration can be done...

I tryed different urf, different courant numbers and different discretisation...

Any idea??

Ralf

June 2, 2006, 07:00

It might be due to your low computer memory(RAM). Try to reduce the grid about 500000 cells and see does it works or not.

June 1, 2006, 13:37	floating point error when starting to iterate	#1
Ralf Schmidt Guest Posts: n/a	Hi! I know, there is a lot of discussion about the floating point error, and there are a lot of answers. But, I can not find a sollution to my problem: I have a 3D geometry with about 1.000.000 cells. It is incompressible, air. I tried all solvers, but every time the same: The floating point error comes when I am starting to iterate. Not even the first iteration can be done... I tryed different urf, different courant numbers and different discretisation... Any idea?? Ralf

June 2, 2006, 07:00	Re: floating point error when starting to iterate	#2
Raza Javed Guest Posts: n/a	It might be due to your low computer memory(RAM). Try to reduce the grid about 500000 cells and see does it works or not.

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