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How to find the integral of a function already defined in derived values
Posted Jun 14, 2016, 10:42 a.m. EDT 0 Replies
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I want to apply these formulas in COMSOL
Average Nusselt number on the left vertical boundary (x=0)
Nu0=∫∂T/∂x dy
I can do this using derived values--> line integral--> choosing the boundary (x=0) ---> right the expression ∂T/∂x --> and then evaluate ---> i get the values of Nu0 at each time.
this integral goes from 0 to H (H height of the cavity)
What if I want to find this value: Average Nusselt number throughout the cavity
Nuaverage=1/(H/L) ∫(Nu0 dx)
this integral goes from 0 to L (L width of the cavity)
It means I want to integrate Nu0 that is already found above (NU0 is a line integral over the wall at x=0).
is it possible to do this?
How can I do it?
your answer will be highly appreciated
Hello Farah Souayfane
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