Flatten 3D cylindrical surface to 2D XY plot

aerohead · June 27, 2013, 10:51

Hi all. I am currently stuck and wondering if there is a way to take a surface pressure contour plot of e.g. a half cylinder and flatten it to an XY plot, with X=X (cm) and Y=theta (degrees or radians). Alternatively, how would this data be exported to TecPlot to achieve the same goal (or can it be achieved by importing the .cas/.dat data into TecPlot)? Thanks for any help!

Far · June 28, 2013, 04:21

Fieldview can do this. It has built in fuciton

aerohead · June 28, 2013, 07:18

Thanks Far, I actually figured it out in TecPlot in the end:

define central point of the cylinder > define a new theta parameter > convert theta to degrees if required - included below in case it can help anyone else out in the future:

{y-centre}={Y}-[insert correction value if required]

{theta}=ATAN2({X},{y-centre})

{theta-degrees}={theta}*(180/pi)

Then plot X vs. theta for a contour plot of the desired variable.

June 27, 2013, 10:51	Flatten 3D cylindrical surface to 2D XY plot	#1
aerohead New Member Join Date: Mar 2013 Posts: 5 Rep Power: 13	Hi all. I am currently stuck and wondering if there is a way to take a surface pressure contour plot of e.g. a half cylinder and flatten it to an XY plot, with X=X (cm) and Y=theta (degrees or radians). Alternatively, how would this data be exported to TecPlot to achieve the same goal (or can it be achieved by importing the .cas/.dat data into TecPlot)? Thanks for any help!

June 28, 2013, 07:18		#3
aerohead New Member Join Date: Mar 2013 Posts: 5 Rep Power: 13	Thanks Far, I actually figured it out in TecPlot in the end: define central point of the cylinder > define a new theta parameter > convert theta to degrees if required - included below in case it can help anyone else out in the future: {y-centre}={Y}-[insert correction value if required] {theta}=ATAN2({X},{y-centre}) {theta-degrees}={theta}*(180/pi) Then plot X vs. theta for a contour plot of the desired variable. fjgwd002 likes this.

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June 28, 2013, 04:21		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Fieldview can do this. It has built in fuciton