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Boundary area, domain volume and average flux through a boundary

Posted 28 mai 2012, 16:06 UTC−4 Heat Transfer & Phase Change, Geometry, Parameters, Variables, & Functions Version 4.2, Version 4.2a 1 Reply

Mika Maaspuro
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1) How to calculate a area of a boundary or volume of a domain in 3D Multiphysics model ?

2) How to calculate an average value for a flux (for example heat power) which through a boundary in 3D
Multiphysics model ?

1 Reply Last Post 29 mai 2012, 02:04 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 29 mai 2012, 02:04 UTC−4
Hi

the length, area respective volume of a 1D, 2D respective 3D Entioty can be obtained by the integration of the operand "1"

And the average is now directly calculated by the "average" operatur your Define on an enetity (domain Boundary ...)

To get the coordinate of a point, you set an integration operant on that point (only 1 point) then integrate intop1(x), intop(y) ... It's a bit heavy, but perfectly logic, and itegration being a sum over elements or "continuous" sections of an entity

--
Good luck
Ivar
Hi the length, area respective volume of a 1D, 2D respective 3D Entioty can be obtained by the integration of the operand "1" And the average is now directly calculated by the "average" operatur your Define on an enetity (domain Boundary ...) To get the coordinate of a point, you set an integration operant on that point (only 1 point) then integrate intop1(x), intop(y) ... It's a bit heavy, but perfectly logic, and itegration being a sum over elements or "continuous" sections of an entity -- Good luck Ivar

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