#Error 001100279

delatorre · August 30, 2011, 05:12

Hi all,

I'm doing a cavitation simulation. I checked the mesh which seems ok but during the solver iterations it suddenly stops (at iteration 31) giving this error. Anyone knows the cause? And besides, there's any error index in the software?

Thank you in advance!

ghorrocks · August 30, 2011, 07:08

You did not include the error message.

And there is no error code list - I wish ANSYS would publish one, it is ridiculous to show very brief error messages with error codes which cannot be looked up.

But almost certainly for a cavitation model your simulation has gone numerically unstable, and you need to increase the numerical stability of your model. And additionally, in my experience cavitation models rarely converge steady state. You often need to do a transient run for them to converge.

delatorre · August 30, 2011, 07:40

Ups sorry!
thanks ghorrocks for your quick response

"ERROR #001100279 has occurred in subroutine ErrAction.
Floating point exception: Overflow"

So you expect a cavitation simulation to not to converge in steady state but to do it in a long enough transient situation? Why? There's any tool which increases numerical stability for the latter case?
Thanks a lot,

ghorrocks · August 30, 2011, 07:51

This has some tips:
http://www.cfd-online.com/Wiki/Ansys...gence_criteria

And the CFX documentation "Obtaining Convergence".

And do a search on the forum for numerical stability - been asked many times, I should do a FAQ on it.

delatorre · August 30, 2011, 07:58

thanks!!!
I'll have a look

August 30, 2011, 05:12	#Error 001100279	#1
delatorre New Member oscar Join Date: Aug 2011 Posts: 13 Rep Power: 15	Hi all, I'm doing a cavitation simulation. I checked the mesh which seems ok but during the solver iterations it suddenly stops (at iteration 31) giving this error. Anyone knows the cause? And besides, there's any error index in the software? Thank you in advance!

August 30, 2011, 07:08		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	You did not include the error message. And there is no error code list - I wish ANSYS would publish one, it is ridiculous to show very brief error messages with error codes which cannot be looked up. But almost certainly for a cavitation model your simulation has gone numerically unstable, and you need to increase the numerical stability of your model. And additionally, in my experience cavitation models rarely converge steady state. You often need to do a transient run for them to converge.

August 30, 2011, 07:40		#3
delatorre New Member oscar Join Date: Aug 2011 Posts: 13 Rep Power: 15	Ups sorry! thanks ghorrocks for your quick response "ERROR #001100279 has occurred in subroutine ErrAction. Floating point exception: Overflow" So you expect a cavitation simulation to not to converge in steady state but to do it in a long enough transient situation? Why? There's any tool which increases numerical stability for the latter case? Thanks a lot,

August 30, 2011, 07:51		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	This has some tips: http://www.cfd-online.com/Wiki/Ansys...gence_criteria And the CFX documentation "Obtaining Convergence". And do a search on the forum for numerical stability - been asked many times, I should do a FAQ on it.

August 30, 2011, 07:58		#5
delatorre New Member oscar Join Date: Aug 2011 Posts: 13 Rep Power: 15	thanks!!! I'll have a look