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-   -   floating point error (http://www.cfd-online.com/Forums/fluent/32780-floating-point-error.html)

emma December 29, 2003 13:36

floating point error
 
Hi all,

I am calculating cavitation in a servo valve(3d)using RNG turbulence model. After 130 iterations, I got some message as following:

Error: floating point error: invalid number

epsilon equation: tol. 1.#INFe+00 0 1.#INFe+00 1 1.#QNBe+00 2 1.#QNBe+00 . . . . . .

This means epsilon is too big to get the adequate turbulent viscosity? Any suggestion is highly appreciated.


sijal ahmed January 1, 2004 01:48

Re: floating point error
 
check ur boundary conditios carefully.

also lower the values of under relaxation factor and use the coupled implicit solver

hope this will help


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