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Hossein Nili (hnili)
Junior Member
Username: hnili

Post Number: 3
Registered: 02-2008
Posted on Tuesday, May 06, 2008 - 05:39 am:   

Hi, could someone please help me out of this problem? I have been struggling with it for weeks now.
I don't know what's the proper way of doing surface integration over a sphere which has been defined in cylindrical coordinates due to axial symmetry of the geometry.
I have used surf_integral and elevation and I get completely different results, neither of which make sense theoretically.
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Robert G. Nelson (rgnelson)
Moderator
Username: rgnelson

Post Number: 1116
Registered: 06-2003
Posted on Tuesday, May 06, 2008 - 01:01 pm:   

In 2D cylindrical geometry, the SURF_INTEGRAL function will weight the integral by 2*pi*R to give a true surface integral of the rotated figure.

In the ELEVATION plot, the plotted curve is integrated without geometric weighting.

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