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Error : floating point exception; overflow.

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Old   March 14, 2009, 10:04
Default Error : floating point exception; overflow.
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maryam
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Hello

I simulate a conjugate heat transfer model. I have received an error message from running cfx solver. Error: floating point exception; overflow. Do you have any idea about the cause of this problem? Thanks very much

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Old   March 16, 2009, 18:44
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james
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Check the mesh to avoid zero volume cells.
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Old   May 18, 2010, 01:15
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Abrie
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Hello, I had the same problem running k-epsilon and omega simulations in star-ccm+. When I refined the mesh to 5E6 cells I got the floating point exception error after 17-27 iterations. My initial pressure was set to 0, because I was working with low Re and pressures. When I changed my initial pressure to 8 Pa and my turbulence from length scale to k- epsilon everything went smooth again. I am simulating flow over a packed bed of spheres.
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Old   May 18, 2010, 07:44
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Glenn Horrocks
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Umm, right. As has been mentioned many times in this forum floating point exception simply means the linear solver has diverged big-time. This cna be caused by many things, either a unphysical setup or inadequate numerical stability being the main ones. You have to do something to increase the numerical stability of the simulation.
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