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How to calculate the area or volume surrounded by contour ？

Posted 26 set 2011, 23:03 GMT-4 Version 4.4, Version 5.0 3 Replies

Tian Ye
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Hi! ,friend. Such as the title ,my comsol version is 4.1.
Thank you very much!
3 Replies Last Post 14 feb 2015, 11:20 GMT-5
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 27 set 2011, 01:50 GMT-4
Hi

intop(1) over a domain gives a volume (in 3D) over a boundary gives you the area (in 3D), decrease the dimension by 1 for 2D models

intop(1) means the integration over the defined (selected) domain (resp boundary ...) of 1*dx*dy*dz

Which is the definition of a mathematical way to calculate the volume respectively the surface, no ?

--
Good luck
Ivar
Hi intop(1) over a domain gives a volume (in 3D) over a boundary gives you the area (in 3D), decrease the dimension by 1 for 2D models intop(1) means the integration over the defined (selected) domain (resp boundary ...) of 1*dx*dy*dz Which is the definition of a mathematical way to calculate the volume respectively the surface, no ? -- Good luck Ivar
Yvonka van Wijk
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Posted: 10 years ago 13 feb 2015, 10:08 GMT-5
Okay, this question is old, but I haven't found any answers on the net yet. The way to do it is use the intop funciton but, don't select 1, but your boundary. Such as intop(T>300[K])
Okay, this question is old, but I haven't found any answers on the net yet. The way to do it is use the intop funciton but, don't select 1, but your boundary. Such as intop(T>300[K])
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 10 years ago 14 feb 2015, 11:20 GMT-5
Hi

have you checked some of the ideas discussed here ?
www.comsol.eu/community/forums/general/thread/32577

And at some time, I believe there was an example of a volume estimation from the contour integral if the normal (Greens theorem) all linked to this example:
www.comsol.eu/model/hyperelastic-seal-206

--
Good luck
Ivar
Hi have you checked some of the ideas discussed here ? http://www.comsol.eu/community/forums/general/thread/32577 And at some time, I believe there was an example of a volume estimation from the contour integral if the normal (Greens theorem) all linked to this example: http://www.comsol.eu/model/hyperelastic-seal-206 -- Good luck Ivar

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