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Create Probing Surface then Surface Integrate over it

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Good evening Ladies and Gentlemen!

I'm working with a 3D fluid flow model, and I want to find the mass flow rate through an arbitrary cross section of the flow. How can I create a surface that can then be integrated across to get mdot = rho*velocity*area? I am easily able to integrate with the "Derived Values" --> "Integration" --> "Surface Integration" command, but I do not know how to create a selectable surface at any arbitrary cross section!

Thanks,

TEB

1 Reply Last Post 20 déc. 2012, 15:32 UTC−5
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 20 déc. 2012, 15:32 UTC−5
Hi

easiest, I would say is to define the surface via a Boolean function on a Data Set "cut plane", if you cannot define it front up via a boundary

--
Good luck
Ivar
Hi easiest, I would say is to define the surface via a Boolean function on a Data Set "cut plane", if you cannot define it front up via a boundary -- Good luck Ivar

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