H2 material data

Trueno · April 4, 2021, 10:26

I'm a little bit new in CFX and I am working with with cryogenic H2 gas. Some characteristics such as density are dependent on temperature at this temperatures. Is there any H2 material file to add it or what should I do?

Opaque · April 5, 2021, 10:13

For H2 in a gaseous state, the density is always a function of temperature.

are you asking for real gas properties for H2? How to obtain them? How to model H2 is such thermodynamic condition?

ANSYS CFX provides the homogenous binary mixture approach, and as well as Real Gas modeling (Redlich-Kwang, Peng-Robinson, etc).

On the Materials folder, right click on it and select Import Library Data. A new panel will show you the current database, you then select the Browse Folder icon and select another material database based on your needs.

Check carefully each database, H2 may not be in the one you expect, say Combustion.

evcelica · April 6, 2021, 09:24

You need to choose how your material needs to be defined based on what you are simulating. There are many options for defining material properties.

April 4, 2021, 10:26	H2 material data	#1
Trueno New Member Alberto Fernandez Join Date: Apr 2021 Posts: 4 Rep Power: 5	I'm a little bit new in CFX and I am working with with cryogenic H2 gas. Some characteristics such as density are dependent on temperature at this temperatures. Is there any H2 material file to add it or what should I do?

April 5, 2021, 10:13		#2
Opaque Senior Member Join Date: Jun 2009 Posts: 1,860 Rep Power: 33	For H2 in a gaseous state, the density is always a function of temperature. are you asking for real gas properties for H2? How to obtain them? How to model H2 is such thermodynamic condition? ANSYS CFX provides the homogenous binary mixture approach, and as well as Real Gas modeling (Redlich-Kwang, Peng-Robinson, etc). On the Materials folder, right click on it and select Import Library Data. A new panel will show you the current database, you then select the Browse Folder icon and select another material database based on your needs. Check carefully each database, H2 may not be in the one you expect, say Combustion. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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April 6, 2021, 09:24		#3
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,184 Rep Power: 23	You need to choose how your material needs to be defined based on what you are simulating. There are many options for defining material properties.