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@INPROCEEDINGS{Belt:852555,
author = {Belt, Alexander and Böhler, Max and Rommeswinkel, Leonie
and Arnold, Lukas},
title = {{O}n the discrepancy of modelling the heat transfer for
pure natural convection},
reportid = {FZJ-2018-05475},
pages = {6},
year = {2018},
abstract = {In the present study, buoyancy driven flow fields in a
bench scale apparatus are experimentally invest- igated by
means of a non intrusive measurement technique, here the
2D-2C particle image velocimetry (PIV). An electrically
heated copper block was used to induce a plume. As the
temperature at the surface of the heating source is the main
driver for the fluid dynamics, the surface temperature field
was measured by thermography. The experimental results are
compared to simulations with the Fire Dynamics Simulator
(FDS). Simulations with a prescribed, homogeneous
distributed surface heat flux and a 3D thermal heat
conduction with a volumetric heat source were carried out.
The impact of both approaches on the resulting flow fields
showed no significant deviations, however, both do not agree
with the experimental data. Whereas the surface temperatures
of the heating source and its vicinity are in a good
agreement for the 3D heat transfer approach. This leads to
the conclusion that the modelled heat transfer mechanism
does not provide valid predictions in this setup.},
month = {Sep},
date = {2018-09-12},
organization = {Third European Symposium on Fire
Safety Sciences, Nancy (France), 12 Sep
2018 - 14 Sep 2018},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511)},
pid = {G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)8},
url = {https://juser.fz-juelich.de/record/852555},
}