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#1 |
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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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#2 |
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james
Join Date: Mar 2009
Posts: 1
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Check the mesh to avoid zero volume cells.
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#3 |
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Abrie
Join Date: Apr 2010
Location: South Africa, North-West, Potchefstroom
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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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#4 |
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Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
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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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