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sonicFoam, flow to vacuum chamber, nonphysical temperature rise ?

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Old   February 19, 2019, 14:36
Default sonicFoam, flow to vacuum chamber, nonphysical temperature rise ?
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Mieszko Młody
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Dear Foamers,

I am modeling a "simple" case, flow from high pressure tank (1bar, 300K) to a low pressure tank (10Pa, 70K) through a hole.

The flow behaves "more/less" in a consistent way, but there is a very high temperature increase at the "head of the pressure wave".

Please see attached figures.

Is it physical ? Or it is some numerical artifact ?



T_0p005sec.jpg

vel_0p005sec.jpg

p_0p005sec.jpg
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high air velocity, high mach, sonicfoam, vacuum chamber

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