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Search: Posts Made By: ghorrocks
Forum: CFX June 23, 2013, 06:36
Replies: 18
Views: 2,852
Posted By ghorrocks
I have not looked for this sort of data before...

I have not looked for this sort of data before for methane and ethane but they are pretty standard engineering gases so should be available. A hunt around and you should find it.
Forum: CFX June 21, 2013, 09:34
Replies: 18
Views: 2,852
Posted By ghorrocks
The Peng Robinson real gas model looks like it...

The Peng Robinson real gas model looks like it should be able to cover both vapour and liquid phases - can you use this real gas model to cover it? Which real gas model did you use before?

Note I...
Forum: CFX June 21, 2013, 09:23
Replies: 18
Views: 2,852
Posted By ghorrocks
Are they both gasses at this T/P ranges? If they...

Are they both gasses at this T/P ranges? If they are both gasses then this should be easy with the multicomponent mixture model. If they start to change phase things are a lot more complex, but a...
Forum: CFX June 21, 2013, 08:38
Replies: 18
Views: 2,852
Posted By ghorrocks
Can you please tell us what materials are in your...

Can you please tell us what materials are in your mixture?
Forum: CFX June 21, 2013, 07:57
Replies: 18
Views: 2,852
Posted By ghorrocks
Not that I know of, but if you talk to CFX...

Not that I know of, but if you talk to CFX support there may be others.

Do you have a model where the ideal mixture model is not adequate?
Forum: CFX June 21, 2013, 03:43
Replies: 18
Views: 2,852
Posted By ghorrocks
CFX already has models to work out the properties...

CFX already has models to work out the properties of mixtures. If you are modelling a mixture then best define it as its constitutive gases and use a mixture model to work out the properties.
Forum: CFX June 20, 2013, 18:46
Replies: 18
Views: 2,852
Posted By ghorrocks
Setting the density as a function of P and T...

Setting the density as a function of P and T leads to some very complex terms in the Navier Stokes equations. For gases like ideal gas, and the real gas models these have been taken care of, but if...
Forum: CFX June 20, 2013, 06:30
Replies: 18
Views: 2,852
Posted By ghorrocks
Which properties do you want to have as a...

Which properties do you want to have as a function of T and P? And what function do you want to use?
Forum: CFX June 19, 2013, 19:12
Replies: 18
Views: 2,852
Posted By ghorrocks
Have you read the documentation? Have a look at...

Have you read the documentation? Have a look at the real gas models in CFX. Also, your comments suggest you are looking for simply a variable density fluid (eg ideal gas), not a real gas.
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