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Constant Prandtl Number with Sutherland Transport

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Old   March 23, 2020, 08:42
Default Constant Prandtl Number with Sutherland Transport
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Josh Kelly
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Hi,

Is it possible to set a constant Prandtl number alongside the Sutherland transport model? From my results so far it appears Pr=1 (approx) but I want Pr = 0.71 throughout the flow, how do I do this? I am using the rhoCentralFoam and my test case is supersonic flow over a flat plate.

Thanks in advance
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Old   March 23, 2020, 12:26
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Gerhard Holzinger
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Most probably not.

When you select Sutherland for the transport model, you specify how OpenFOAM calculates the dynamic viscosity and the thermal conductivity.
This leaves you with no remaining independent quantities. Hence, the Prandtl number is already fixed.

The screenshots attached to this post, were taken from my "manual", which can be found here
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File Type: png sutherlandViscosity.png (23.6 KB, 5 views)
File Type: png sutherlandThermalConductivity.png (29.5 KB, 5 views)
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openfoam, prandtl number, rhocentralfoam, sutherland, transport model

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