Starting 3D simulation with ideal gas – f.p.error -- CFD Online Discussion Forums

August 5, 2005, 06:59	Starting 3D simulation with ideal gas – f.p.error	#1
Ralf Schmidt Guest Posts: n/a	Hi, I am running a simulation of a 3D geometry with air at constant density and it works very fine. Now I changed the air properties to ideal gas (there are up to 3 bars pressure on my device). When I start iterating, the floating point error occurs. Even when I set courant number to 0.1 and at the mass flow inlet boundary ant pressure outlet boundary all turbulence values to 0.1 (k-epsilon) the floating point error occurs before the first iteration is finished. What is wrong? Any help is highly appreciated! Ralf

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