|June 2, 2012, 03:11||
Fatal overflow in linear solver
Join Date: Apr 2011
Posts: 13Rep Power: 7
I am trying to solve a two way FSI Problem in CFX (Ansys 13).
First I will explain the CFX problem:
Blood simulator flows in an elastic pipe (latex).
The elastic pipe is deformed by an external pressure acting on the surface
(limitted area). The pressure is a time dependent function -- P0*sin(F0*t).
Now, to my problem:
The CFX is working great on frequencies (F0) varying from 6Hz to 21Hz, but when I am trying to apply a 22Hz pressure, the simulation crashes after 1,500 iterations (nothing is changed except the frequency).
I read a little about this error and I know it's related to unphysical boundary conditions. But the boundary conditions haven't changed.
Thanks in advance,
|June 2, 2012, 06:29||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,534Rep Power: 97
No, this error means the linear solver has diverged. See FAQ: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F
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