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-   -   Translate the pressure field on a cylinder side to a plane (http://www.cfd-online.com/Forums/cfx/94559-translate-pressure-field-cylinder-side-plane.html)

 rockzh November 18, 2011 23:55

Translate the pressure field on a cylinder side to a plane

The Geometry of the model is similar with a cylinder,and I get the pressure field on the side surface of the cylinder .For easier to analyse the 360 degree pressure field on the side ,how to make the pressure field be visual on a plane surface in CFX,or other Code(such as Tecplot)?

 Far November 19, 2011 11:54

This is one of the new features of Field View to unwrap the cylindrical surface to planer for visualization purposes.

 rockzh November 21, 2011 22:20

how to do this?
Anyone can give an idea?

 ghorrocks November 22, 2011 05:47

I do not think you can do this in CFD-Post. But you can do most of the hard work by defining a variable theta which is the angle around the body, and exporting theta, z and you variable to a file. You can then load it in anything (matlab, excel if you must or any other plotting program) and plot it as a 2D plot of theta versus z.

 Far November 22, 2011 06:08

Not possible in CFD-Post
http://www.ilight.com/fieldview12.3_whatsnew.pdf. Here you will find the feature known as unrolled cylindrical surfaces.

 brunoc November 22, 2011 14:32

Well,

If we're talking straight about surfaces of revolution than it might be possible to unwrap them using Turbo Post.

The down side is that you have to find equivalents for the turbo closed region (inlet, outlet, hub, shroud).
The up side is that if you don't have such regions you can provide Post with lines that represents them. These lines can be generated using polylines, for example.

If anyone claims this is not straightforward, I would totally agree. But if you don't have any other tool, than at least you have a way of plotting your data the way you want.

Cheers

 ghorrocks November 22, 2011 17:31

Quote:
 Not possible in CFD-Post
? I explained how you can export the data in a format from CFD-Post which should be readable in any 2D plotting program. While actually doing the plot is not possible in CFD-Post you can get it to do most of the hard work. It should be reasonably straight forward.

 rockzh November 23, 2011 01:50

Thank you very much for every method.
I will try.

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