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More services...Radiation on 2D and 3D models
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Last post: August 26, 2010 4:42pm UTC
August 26, 2010 4:42pm UTC
Radiation on 2D and 3D models
Hi
I used one of comsol model which is "cavity radiation " under heat transfer tutorial models.
In the 2D case, the total radiative heat flow integrals around 3 surfaces add to
almost zero. A similar cavity extended into 3D and there is a severe imbalance in
the radiative heat flows, as in there most of the power flowing into the cavity
disappears. I am assuming inside the cavity is vacuum. When I extended it to 3D, is it still vacuum. ??? I could not find any info in COMSOL about it.
I attached the 2D and 2D models to this question.
> 2D data:
> Value of integral: 5000.00000 [W/m], Expression: rflux_htgh, Boundary: 3
> Value of integral: 6000.00000 [W/m], Expression: rflux_htgh, Boundary: 9
> Value of integral: -10968.076 [W/m], Expression: rflux_htgh, Boundary: 6,
>
> 3D data:
> Value of integral: 2499.999999776032 [W], Expression: rflux_htgh, Boundary: 5
> Value of integral: 3000.0000013650556 [W], Expression: rflux_htgh, Boundary: 13
> Value of integral: -352.5979842004816 [W], Expression: rflux_htgh, Boundary: 10
Please advise.
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