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-   -   dasac failure at Temperature (http://www.cfd-online.com/Forums/fluent/49972-dasac-failure-temperature.html)

Leverkin December 4, 2008 09:37

dasac failure at Temperature
 
Hello dear people,

I am recently simulating a problem with a large number of reactions and i keep having this message. Does anyone know what that means?

The results that i am getting are far from realistic.

Thanks in advance!

eegala June 21, 2009 09:37

dasac failure at temperature.
 
hi leverkin,
did u solve your problem in fluent 'dasac failure at temperature'.
I too got the same problem.If u got the solution please help me.



my email id :eegala.gopalakrishna@gmail.com

dag January 18, 2010 09:51

Try reducing activation energy
 
I think "dasac" means "differential algebraic sensitivity analysis code".
But that doesn't really helps... ;)

If you are modelling reacting flow:
try reducing the highest activation energy of your reactions by a factor 1e+6 or more...
That helped me... so far...

ALEXZHUANG January 18, 2013 09:48

hi leverkin and all the other guys,
did u solve your problem in fluent 'dasac failure at temperature'.
I too got the same problem.If u got the solution please help me.
:p

eegala February 21, 2013 01:52

dasac failure at Temperature
 
Please try to check the material properties in reacting flows, particularly for density. This occurs due to sudden increase in temperature of the domain beyond 5000 K.


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