Overflow - Help me

Roland R · April 16, 2013, 11:37

Hello,

I try to simulate a transient model. The solver starts to calculate but I always get "Overflow" in the 0. time step after 2-3 iterations. Based on these iterations, the residuals are ok. In my opinion, the mesh and the time step size are ok. (I think, if the mesh or the time step value is not ok then the error should be seen only after some time steps in the convergence history.) What can be the problem?

Regards
Roland

ghorrocks · April 16, 2013, 19:28

FAQ: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F

April 16, 2013, 11:37	Overflow - Help me	#1
Roland R Senior Member Roland Rakos Join Date: Mar 2009 Posts: 131 Rep Power: 17	Hello, I try to simulate a transient model. The solver starts to calculate but I always get "Overflow" in the 0. time step after 2-3 iterations. Based on these iterations, the residuals are ok. In my opinion, the mesh and the time step size are ok. (I think, if the mesh or the time step value is not ok then the error should be seen only after some time steps in the convergence history.) What can be the problem? Regards Roland

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April 16, 2013, 19:28		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	FAQ: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F