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Search took 0.00 seconds. Search: Posts Made By: ghorrocks
Forum: CFX June 5, 2019, 19:28
Replies: 18
Views: 6,363
Posted By ghorrocks
The initial condition is just that, it is just an...

The initial condition is just that, it is just an initial condition. The solver will then adjust the variables available to what it thinks will happen.

Small changes in the initial conditions...
Forum: CFX June 4, 2019, 23:33
Replies: 18
Views: 6,363
Posted By ghorrocks
Your experiment has the inlet pressure 3.02MPa so...

Your experiment has the inlet pressure 3.02MPa so your outlet is about 3.013MPa.

If you use 3.02MPa as the reference pressure then your outlet pressure boundary should be -7.25kPa and your inlet...
Forum: CFX June 4, 2019, 21:59
Replies: 18
Views: 6,363
Posted By ghorrocks
Sorry, I did not explain fully. Use a mass flow...

Sorry, I did not explain fully. Use a mass flow rate boundary for your inlet and a pressure boundary for your outlet. Then the pressure drop can be compared against your experimental results as a...
Forum: CFX June 4, 2019, 19:56
Replies: 18
Views: 6,363
Posted By ghorrocks
Then you know the exit pressure, so use that for...

Then you know the exit pressure, so use that for the exit pressure boundary and see if the simulation gets the correct pressure drop as a validation of the simulation.
Forum: CFX June 11, 2011, 07:40
Replies: 18
Views: 6,363
Posted By ghorrocks
The comment was "zero gradient on all...

The comment was "zero gradient on all parameters". That is a symmetry plane, but I guess the symmetry plane has the additional constraint of no flow normal to it. I guess a bit cheeky of me to change...
Forum: CFX March 8, 2011, 17:01
Replies: 18
Views: 6,363
Posted By ghorrocks
That is a symmetry plane. You have to define...

That is a symmetry plane.

You have to define at least one parameter at an outlet.
Forum: CFX March 7, 2011, 18:57
Replies: 18
Views: 6,363
Posted By ghorrocks
The outlet in CFX is similar. It can be set up to...

The outlet in CFX is similar. It can be set up to use zero gradient on all parameters except pressure which needs to be defined.
Forum: CFX March 6, 2011, 17:14
Replies: 18
Views: 6,363
Posted By ghorrocks
Incompressible or compressible flow? If...

Incompressible or compressible flow? If compressible, sub-sonic or supersonic?
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