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To extract data over a circle

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Old   April 19, 2016, 08:29
Question To extract data over a circle
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kartik
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I am new to Tecplot. I have a 3D annulus geometry. I want the temperatures across the circumference of a circle at a specified radius. Can someone please help me?
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Old   December 2, 2019, 00:22
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Hongye Ma
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Have you solved the problem? I hope I can get the solution. Thank you
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Old   December 9, 2019, 14:06
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Scott Fowler
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One option is to compute a 'radius' variable using Data>Alter>Specify Equations.

For example:
{radius} = sqrt(X*X+Y*Y)

Then do the following:
1) Create an iso-surface based on 'radius'.
2) Extract the iso-surface to a new zone
3) Activate only the new iso-surface zone
4) Create a slice at Z=nnn, ensuring that the slice cuts through surface data.
5) Extract the slice to a new zone

This will leave you with line data at a specific 'radius' and 'z' location.

I hope this helps.
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Old   December 10, 2019, 08:21
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Hongye Ma
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Thank you very much for your comments
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Old   July 25, 2020, 10:44
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Dear Scott,

I have been trying to extract data over a circle in 2D using tecplot similar to polyline extraction. Is it not possible? How may I do the data extraction along a curved surface?
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Old   March 15, 2023, 07:34
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MD KAWSAR SAJIB
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Quote:
Originally Posted by damu1414 View Post
Dear Scott,

I have been trying to extract data over a circle in 2D using tecplot similar to polyline extraction. Is it not possible? How may I do the data extraction along a curved surface?

Could you please tell me how did you do that? I need to extract data from the cylinder edge in 2D. TIA
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Old   March 15, 2023, 12:01
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Scott Fowler
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In the 2D case you can Extract Contour Lines.

1) Create the radius variable: {radius} = sqrt(x*x+y*y)
2) Toggle on Contour on the Plot sidebar
3) In the Zone Style dialog, change "Contour Type" to "Lines"
4) In the "Contour & Multi-Coloring Details" dialog adjust the "Contour levels" to show the value (or values) you're interested in.
5) Use "Data>Extract>Contour Lines"

This should result in a new FE-Line Segment zone. As of 360 2022 R2, you cannot extract contour lines from Polyhedral data however.

I hope this helps.
Scott
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Old   March 15, 2023, 13:18
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Quote:
Originally Posted by wsfowler View Post
In the 2D case you can Extract Contour Lines.

1) Create the radius variable: {radius} = sqrt(x*x+y*y)
2) Toggle on Contour on the Plot sidebar
3) In the Zone Style dialog, change "Contour Type" to "Lines"
4) In the "Contour & Multi-Coloring Details" dialog adjust the "Contour levels" to show the value (or values) you're interested in.
5) Use "Data>Extract>Contour Lines"

This should result in a new FE-Line Segment zone. As of 360 2022 R2, you cannot extract contour lines from Polyhedral data however.

I hope this helps.
Scott
Thank you a lot. I will try tomorrow for sure.
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