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Equation of State

Posted 2017年4月10日 GMT-4 11:56 Computational Fluid Dynamics (CFD) Version 5.2 1 Reply

Rasaer
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If I chose to use a different Equation of State instead of Ideal gas law, is it possible to incorporate in COMSOL?
1 Reply Last Post 2017年4月10日 GMT-4 15:02
Mohammad Amin Kazemi
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Posted: 8 years ago 2017年4月10日 GMT-4 15:02
Rajib,
It is possible. Define the gas density according to your new equation of state.
For instance, if you are using the virial equation of state, instead of rho_gas=p/RT, use rho=p/(ZRT).
And define Z in the variable section:
Z=1+Bp+...
Amin,

Rajib, It is possible. Define the gas density according to your new equation of state. For instance, if you are using the virial equation of state, instead of rho_gas=p/RT, use rho=p/(ZRT). And define Z in the variable section: Z=1+Bp+... Amin,

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