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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},
}