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Heating Air/Liquid Cavity 2d-Transient

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Old   January 17, 2023, 17:40
Default Heating Air/Liquid Cavity 2d-Transient
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Tarık Yaman
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Greetings, I am interested in gas heating in closed and constant volume region. But I have some thoughts, I want to share them with you and get advice.

Its volume is constant, if I heat any gas (example: air), its density does not change.

Therefore, my material is of constant density.
When a constant volume of gas is heated, its pressure will increase.
From the ideal gas behavior I get the following relation:


P_1/T_1 = P_2/T_2

At the same time, an increase in viscosity will occur due to the increase in pressure.

**I should use C_v instead of C_p because in my analysis the volume is constant, not the pressure.






I want to adjust these values ​​according to temperature and pressure in Fluent, I think I need to work hard to find these values. Since pressure increases proportionally with temperature, I actually have to write them all as a function of temperature. I have to open the thermodynamics book.

Or am I thinking of too many details? Is there a method that will lead us to similar results with a little error?

About this subject; Do you suggest any adjustments in material settings, solution methods, controls?
Thank you in advance for your help and feedback.


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cavity problem, natural convection, transient

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