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AIR molecular properties

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Old   January 3, 2002, 12:08
Default AIR molecular properties
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Julie Polyakh
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What options for AIR molecular properties (i.e. density, Cv, conductivity) should I set for compressible flow?
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Old   January 4, 2002, 06:54
Default Re: AIR molecular properties
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john
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Normally IDEAL GAS f(P,T) for density, constant specific heat capacity and conductivity are adequate. If temperature is high, you may also consider Suderland formula for laminar viscosity.
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Old   January 4, 2002, 08:59
Default Re: AIR molecular properties
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Julie Polyakh
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I obtain the temperature values x2 than they should be. What could be the reason? I have just 2 opposing inlets and pressure boundary (outlet, actually). The velocities are low. No chemistry. Do you have any ideas? (I hope you do
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Old   January 5, 2002, 17:25
Default Re: AIR molecular properties
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Julie Polyakh
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After I've set the 'Thermal' option for the enthalpy computation the temperature values are OK. But now there is no convergence after 1000 iterations (the enthalpy residual ~0.04).
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