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Search: Posts Made By: ghorrocks
Forum: CFX February 3, 2013, 05:07
Replies: 27
Views: 4,518
Posted By ghorrocks
If you are still getting a recirculation at the...

If you are still getting a recirculation at the exit even after moving it 2m down stream then you have not moved it far enough. You need to move it far enough that the flow is all in one direction,...
Forum: CFX January 17, 2013, 20:42
Replies: 27
Views: 4,518
Posted By ghorrocks
I would just stay with an outlet but move it...

I would just stay with an outlet but move it further downstream. Outlets are more numerically stable than openings, provided the flow is all in the same direction.
Forum: CFX January 16, 2013, 16:50
Replies: 27
Views: 4,518
Posted By ghorrocks
A detailed discussion is here:...

A detailed discussion is here: http://www.cfd-online.com/Wiki/Ansys_FAQ#My_steady_state_solution_converges_for_a_while_but_stops_converging_before_reaching_my_convergence_criteria

But in your case...
Forum: CFX January 12, 2013, 15:29
Replies: 27
Views: 4,518
Posted By ghorrocks
This FAQ explains a lot...

This FAQ explains a lot http://www.cfd-online.com/Wiki/Ansys_FAQ#My_steady_state_solution_converges_for_a_while_but_stops_converging_before_reaching_my_convergence_criteria but maybe it does not...
Forum: CFX January 6, 2013, 17:01
Replies: 27
Views: 4,518
Posted By ghorrocks
The FAQ I already linked to describes a good...

The FAQ I already linked to describes a good procedure to follow.

I would also have a look at your flow reporting reverse flow in CFD-Post. Does it look physically possible? If yes then you need...
Forum: CFX January 3, 2013, 17:58
Replies: 27
Views: 4,518
Posted By ghorrocks
Your questions are discussed in the FAQ:...

Your questions are discussed in the FAQ: http://www.cfd-online.com/Wiki/Ansys_FAQ#My_steady_state_solution_converges_for_a_while_but_stops_converging_before_reaching_my_convergence_criteria
Forum: CFX December 30, 2012, 06:31
Replies: 27
Views: 4,518
Posted By ghorrocks
Two problems are obvious: 1) Your downstream...

Two problems are obvious:
1) Your downstream boundary is too close. Need to move it downstream.
2) Your mesh around the obstacle is poor. The transition from the prism layers to the bulk mesh has...
Forum: CFX December 27, 2012, 05:55
Replies: 27
Views: 4,518
Posted By ghorrocks
In CFX-Pre, when you set the result file there is...

In CFX-Pre, when you set the result file there is an option "Output Equation Residuals". This option puts the residuals in the output file.

The reason this is useful is because after you have run...
Forum: CFX December 26, 2012, 04:55
Replies: 27
Views: 4,518
Posted By ghorrocks
What bit don't you understand? How to put the...

What bit don't you understand? How to put the residuals into the results file, or how to get the results out in CFD-Post, or how to interpret the results?
Forum: CFX December 25, 2012, 04:44
Replies: 27
Views: 4,518
Posted By ghorrocks
All your questions are discussed on the FAQ:...

All your questions are discussed on the FAQ: http://www.cfd-online.com/Wiki/Ansys_FAQ#My_steady_state_solution_converges_for_a_while_but_stops_converging_before_reaching_my_convergence_criteria
Forum: CFX December 16, 2012, 04:36
Replies: 27
Views: 4,518
Posted By ghorrocks
Far is correct, your question is too general for...

Far is correct, your question is too general for us to help so the best thing we can do is to refer you to the general FAQS: http://www.cfd-online.com/Wiki/Ansys_FAQ#Why_are_my_results_inaccurate.3F...
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