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April 20, 2012, 11:45 |
How to set up symmetry for simple 2D model?
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#1 |
New Member
Andrius
Join Date: Mar 2012
Posts: 23
Rep Power: 14 |
Hi guys,
I am trying to model turbulent axisymmetric flow. My approach is to draw half of the geometry and create a named selection (axis) to specify where I want the symmetry. My approach is to specify the 2D space to be axis symmetric and use axis boundary condition. However, this has failed. Is this the correct approach? |
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April 20, 2012, 16:58 |
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#2 |
Senior Member
Ali
Join Date: Jan 2012
Location: Pakistan
Posts: 134
Rep Power: 16 |
I think you are doing wrong. This case is not axi-symmetric but looks like planer.
I suggest rename axis with symmetry and run the case. is it circular geometry? if not, then follow my suggestion.
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Best Regards Ali |
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April 20, 2012, 17:06 |
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#3 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,654
Rep Power: 65 |
You cannot change the default axis for an axissymmetric setup in Fluent. Your axis can only be the Fluent default. In other words, you cannot choose an axis or choose where you want symmetry. That may be your problem. I believe the default is the x-axis, centered at y=0 and z=0 (check it on Fluent manual to be sure).
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April 20, 2012, 21:43 |
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#4 |
New Member
Andrius
Join Date: Mar 2012
Posts: 23
Rep Power: 14 |
It worked when I drew it using x-axis as symmetry!
However I have realised that it may be incorrect, I am studying the circulation past the bluff body and each side has an effect on each other... |
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