|April 13, 2013, 06:01||
Join Date: Apr 2013
Posts: 13Rep Power: 5
i code like below
and exvar = c/kb (d is very small value)
kb is boltzman constant so it has very small value and c is constant
when i apply this UDF in cfx, solver shows error message that Zero divide . But it is not zero.
i annouced exvar and kb as double precision
when i made
it also shows same error, so i changed
exvar = kb/c
and it works.
but DEXP is not the case. i cannot change that
how can i get result?
|April 15, 2013, 05:08||
Join Date: Jun 2012
Posts: 312Rep Power: 6
Sounds like rounding error. Try double precision and your problem may go away.
HOWEVER read about what double precision is, and what it means when you switch it on.
|fortran code, udf and programming, zero divide|
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