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Floating point exception in combustion models |
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June 1, 2016, 05:54 |
Floating point exception in combustion models
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New Member
Join Date: May 2016
Posts: 17
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Hello,
I'm relatively new to CCM+ an I hope that somebody can help me with the follwoing problem. I'm trying to simulate a methane combustion in a pre-chamber. I have a mass flow inlet at the top and a pressure outlet at the bottom. Both boundaries are regulated by one table(time) each. When I'm doing the simulation without a combustion("non-reacting"selected in the Physics Models) there is no problem and the simulation is running. As soon as I change the Physics Models to "reacting" I'm getting several problems: -if I want to simulate with "coupled Flow" the simulation doesn't start and I get following error: Unable to initialize alls solvers after 10 passes. -So I switched to "segregated Flow" an try to run an premixed coherent flame model combustion. In this case the simulation seems not to converge and after a few iterations I get the error: A floating point exception ... -If I try it with a "non-premixed combustion" (because here I can choose the species on the boundaries and the initial conditions) I get the same error: A floating point.... Has anybody suggestions what I can do here? I'm glad about every suggestion Regards |
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Tags |
combustion, floating point |
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