URGENT!!! compressible METHANE in the ThermophysicalProperties

masuarez · November 2, 2010, 11:57

This is my second time posting regarding this issue (sorry everybody), but I still need to figure out how to use methane in OpenFoam (or any other substance other than air). As mentioned in my previous post, i'm a new user and need this for a school project. Any help is appreciated.

Miguel

Rami · November 3, 2010, 04:09

Hi Miguel,

You did not specify what properties you need, neither am I familiar with OpenFoam. However, you may find thermal and transport properties for methane (as well as for other common materials) in NIST Web Book( http://webbook.nist.gov/chemistry/fluid ) .

I hope this helps,
Rami

masuarez · November 7, 2010, 15:18

Rami,

What i have:
-An equation of state for methane [density as a function of pressure and temperature]

What i need:
-a way to implement my equation of state into OpenFOAM.

in other words, density is dependent on pressure and temperature and i need a way to tell openfoam what the relationship is.

For example, when i used FLUENT, i had to specify that I wanted to use a density based solver and that my material's density was real gas. Fluent then used a built in formula to calculate density, pressure, and temperature. I need to do the same using OpenFOAM

November 2, 2010, 11:57	URGENT!!! compressible METHANE in the ThermophysicalProperties	#1
masuarez New Member Miguel Suarez Join Date: Aug 2010 Location: El Paso Texas Posts: 28 Rep Power: 15	This is my second time posting regarding this issue (sorry everybody), but I still need to figure out how to use methane in OpenFoam (or any other substance other than air). As mentioned in my previous post, i'm a new user and need this for a school project. Any help is appreciated. Miguel

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November 3, 2010, 04:09		#2
Rami Senior Member Rami Ben-Zvi Join Date: Mar 2009 Posts: 155 Rep Power: 17	Hi Miguel, You did not specify what properties you need, neither am I familiar with OpenFoam. However, you may find thermal and transport properties for methane (as well as for other common materials) in NIST Web Book( http://webbook.nist.gov/chemistry/fluid ) . I hope this helps, Rami

November 7, 2010, 15:18		#3
masuarez New Member Miguel Suarez Join Date: Aug 2010 Location: El Paso Texas Posts: 28 Rep Power: 15	Rami, What i have: -An equation of state for methane [density as a function of pressure and temperature] What i need: -a way to implement my equation of state into OpenFOAM. in other words, density is dependent on pressure and temperature and i need a way to tell openfoam what the relationship is. For example, when i used FLUENT, i had to specify that I wanted to use a density based solver and that my material's density was real gas. Fluent then used a built in formula to calculate density, pressure, and temperature. I need to do the same using OpenFOAM