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relationship of density with pressure and temperature in Fluent

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Old   August 25, 2017, 06:21
Default relationship of density with pressure and temperature in Fluent
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ehsan
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Hi all,

Can someone provide me with a reference which shows the relationship of density with pressure and temperature, and is embedded in Fluent?

Many thanks,
Ehsan
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Old   August 25, 2017, 08:05
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Kirill Borodin
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Hello! Dependence of density on pressure and temperature is called equation of state. There is a number of such equations in fluent

What do you need it for?

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Old   August 25, 2017, 08:42
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I need to reference to it in a research paper. I am modelling a multi-phase turbulence flow using VOF and k-epsilon models.
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Old   August 25, 2017, 09:10
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Cees Haringa
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it depends on how you set it.
The default materials typically have constant density and constant temperature (energy equation off), they will not be affected by the local values of your pressure.

These things are only influenced if you explicitly set them to be. So, if you want to include that in your research paper, make sure you also enabled the relevant options in the software!
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Old   August 25, 2017, 16:11
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So you conducted a research via fluent. Why don't you just refer to the equation of state that you used in the research? Isn't that enough? If not, the first thing that comes to mind is setting proper values of pressure and temperature at the inlet and initializing the field, so you get the value of density under certain conditions

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