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calculating surface convective heat transfer coefficient

Verfasst: 25 Feb 2022, 02:19
von salthothumid
Whether it has the function of calculating the surface convective heat transfer coefficient

Re: calculating surface convective heat transfer coefficient

Verfasst: 25 Feb 2022, 15:10
von fechner
Hello,

It depends on the selected kind.
For kind 'Exchange coefficient', the exchange coefficient is constant.
For the kind 'Boundary layer' we use the following function:

h = h0 + c * v ^ e

v is the air velocity. h0, c and e are coefficients. Here is a picture of the corresponding boundary condition.
bc1.jpg
bc1.jpg (85.49 KiB) 18050 mal betrachtet

Re: calculating surface convective heat transfer coefficient

Verfasst: 26 Feb 2022, 05:47
von salthothumid
thank you

Re: calculating surface convective heat transfer coefficient

Verfasst: 28 Feb 2022, 16:02
von fechner
Ok, you can find an explanation of all output quantities in the output tutorial:
see here: https://www.bauklimatik-dresden.de/delp ... for_fluxes