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September 13, 2011, 23:32 |
CFX Post - Vector field lines possible?
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#1 |
New Member
tdpomodoro
Join Date: Sep 2011
Posts: 4
Rep Power: 14 |
Hi guys,
Been reading the forum for a long time - lots of knowledge here. I've come across a problem that's stumped me. I'm trying to create a vector plot to visualize the swirling nature of the fluid downstream of a cylinder. I'd like the arrows joined head to tail, sort of like a an isobar but for velocity? I've searched through the ANSYS help files to no avail, it seems all that is possible is a field of vectors. Any help would be much appreciated. Here's a picture of what i'm trying to achieve: Last edited by tdpomodoro; September 13, 2011 at 23:38. Reason: typo |
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September 14, 2011, 02:31 |
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#2 |
Senior Member
Lance
Join Date: Mar 2009
Posts: 669
Rep Power: 22 |
Um, one way could be to first create stream lines and then create a vector field where you specify location: streamline 1 in the settings for the vector plot. Would that give you what you want?
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September 14, 2011, 07:07 |
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#3 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,728
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Another option could be to define the cross section planes then do surface streamlines on the planes.
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September 14, 2011, 10:33 |
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#4 | ||
New Member
tdpomodoro
Join Date: Sep 2011
Posts: 4
Rep Power: 14 |
Thanks for your replies, guys.
Quote:
Quote:
Also, when I apply an arrowhead to the stream lines they point normal to the plane? Perhaps these surface streamlines aren't actually giving me the vectors in the plane of the plane? |
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September 14, 2011, 17:24 |
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#5 |
Senior Member
Bruno
Join Date: Mar 2009
Location: Brazil
Posts: 277
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Glenn's suggestion should work. Try playing with the min and max times and the interval. Use a constant black color. Also, instead of using the arrowhead, use arrowhead 3D and disable lightning at the render tab. That should give you something close to what you want.
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September 15, 2011, 06:52 |
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#6 |
New Member
Join Date: Jun 2011
Posts: 15
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Unfortunately, arrows will never be as good as these ones shown in your Fig.6. As far as I am aware, Glenn & brunoc's suggestions are the only available approaches in CFD-Post (at the moment) to solve this issue.
FYI, you can change projection to Tangential on Vector Plot but results are still not as good as those. Alternatively, you can draw Surface Streamlines on specific cross-section planes (see Glenn thread) without any symbols, and then add 'arrows' using any image editor software. Hope it helps. |
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November 30, 2016, 14:00 |
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#7 |
New Member
mao
Join Date: Mar 2016
Posts: 20
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hi, have you made this? i meet the same problem.....
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December 25, 2016, 01:48 |
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#8 |
Senior Member
Join Date: Feb 2011
Posts: 496
Rep Power: 18 |
Some pictures that may help
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January 16, 2017, 08:48 |
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#9 |
Member
Alex
Join Date: Feb 2016
Posts: 81
Rep Power: 10 |
Antanas, could you share this presentation/webinar or just a link please? I searched for "ANSYS_CFD_Post_Ask_The_Experts" via google, but failed to find it
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January 16, 2017, 12:48 |
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#10 | |
Senior Member
Join Date: Feb 2011
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Quote:
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