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Search: Posts Made By: ghorrocks
Forum: CFX March 26, 2019, 16:42
Replies: 22
Views: 18,799
Posted By ghorrocks
I have not looked at the discussion in this...

I have not looked at the discussion in this thread in detail, but I can say that convergence will be similar for steady state or transient. The fact the material property changes affects convergence...
Forum: CFX July 17, 2012, 19:19
Replies: 22
Views: 18,799
Posted By ghorrocks
There are many ways to do this, you can define...

There are many ways to do this, you can define monitor points and export it after the run, you can extract things during post processing.

What are you trying to do?
Forum: CFX July 16, 2012, 22:57
Replies: 22
Views: 18,799
Posted By ghorrocks
Maybe, but do not assume that it has fully worked...

Maybe, but do not assume that it has fully worked without checking. There is a good reason why it is not in there by default.
Forum: CFX July 16, 2012, 08:18
Replies: 22
Views: 18,799
Posted By ghorrocks
Please post the output file so we can see the...

Please post the output file so we can see the error message. Your snippet does not tell us much.
Forum: CFX July 15, 2012, 08:26
Replies: 22
Views: 18,799
Posted By ghorrocks
Yes - some finer points though -...

Yes - some finer points though - massflowAve(T)@Outlet is often better as the massflow average is proportional to the heat flux leaving the domain (for constant properties fluids :) ). ave(T)@Outlet...
Forum: CFX July 6, 2012, 02:03
Replies: 22
Views: 18,799
Posted By ghorrocks
heat transfer model = total energy and the fluid...

heat transfer model = total energy and the fluid having variable density (eg ideal gas) means compressible.

heat transfer model = none, isothermal or thermal energy = incompressible.

If you...
Forum: CFX July 5, 2012, 18:33
Replies: 22
Views: 18,799
Posted By ghorrocks
For many HVAC applications modelling air as an...

For many HVAC applications modelling air as an incompressible fluid (with buoyancy) is adequate. A general rule in CFD is to use the simplest possible model, and only go to a more complex model (eg...
Forum: CFX July 5, 2012, 05:58
Replies: 22
Views: 18,799
Posted By ghorrocks
Does this work if you use a simple incompressible...

Does this work if you use a simple incompressible fluid for air? Why do you need air to be an ideal gas?
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