Fatal overflow in linear solver
Hi all,
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, James |
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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