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Large Eddy simulations of the ceiling jet induced by the impingement of a turbulent air plume

Setareh Ebrahim Zadeh (UGent) , Georgios Maragkos (UGent) , Tarek Beji (UGent) and Bart Merci (UGent)
(2016) FIRE TECHNOLOGY. 52(6). p.2093-2115
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Abstract
In this paper, a sensitivity study is performed with FireFOAM 2.2.x for a hot air jet plume impinging onto a flat horizontal ceiling. The plume evolution and the induced ceiling flow are considered. The influence of the level of turbulence imposed at the inlet, in terms of intensity and eddy length scale, is discussed. Also, the effect of the turbulence model constant is examined. For the case considered, the best results are obtained when no sub-grid scale (SGS) model is used. If a SGS model is used, the level of turbulence at the inlet and the choice of the turbulence model constant are shown to have a significant effect on the prediction of plume's spreading and the ceiling flow velocity. The eddy length scale at the inflow does not have significant impact on the results. Comparisons with the available experimental data indicate that FireFOAM is capable of predicting the mean velocity-field well. In the near field region, an under-estimation of the turbulent velocity fluctuations is observed, whereas reasonably good agreement is obtained in the far field.
Keywords
FireFOAM, Hot air jet plume, Ceiling flow, LES

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MLA
Ebrahim Zadeh, Setareh et al. “Large Eddy Simulations of the Ceiling Jet Induced by the Impingement of a Turbulent Air Plume.” FIRE TECHNOLOGY 52.6 (2016): 2093–2115. Print.
APA
Ebrahim Zadeh, S., Maragkos, G., Beji, T., & Merci, B. (2016). Large Eddy simulations of the ceiling jet induced by the impingement of a turbulent air plume. FIRE TECHNOLOGY, 52(6), 2093–2115.
Chicago author-date
Ebrahim Zadeh, Setareh, Georgios Maragkos, Tarek Beji, and Bart Merci. 2016. “Large Eddy Simulations of the Ceiling Jet Induced by the Impingement of a Turbulent Air Plume.” Fire Technology 52 (6): 2093–2115.
Chicago author-date (all authors)
Ebrahim Zadeh, Setareh, Georgios Maragkos, Tarek Beji, and Bart Merci. 2016. “Large Eddy Simulations of the Ceiling Jet Induced by the Impingement of a Turbulent Air Plume.” Fire Technology 52 (6): 2093–2115.
Vancouver
1.
Ebrahim Zadeh S, Maragkos G, Beji T, Merci B. Large Eddy simulations of the ceiling jet induced by the impingement of a turbulent air plume. FIRE TECHNOLOGY. Springer Nature; 2016;52(6):2093–115.
IEEE
[1]
S. Ebrahim Zadeh, G. Maragkos, T. Beji, and B. Merci, “Large Eddy simulations of the ceiling jet induced by the impingement of a turbulent air plume,” FIRE TECHNOLOGY, vol. 52, no. 6, pp. 2093–2115, 2016.
@article{8510025,
  abstract     = {In this paper, a sensitivity study is performed with FireFOAM 2.2.x for a hot air jet plume impinging onto a flat horizontal ceiling. The plume evolution and the induced ceiling flow are considered. The influence of the level of turbulence imposed at the inlet, in terms of intensity and eddy length scale, is discussed. Also, the effect of the turbulence model constant is examined. For the case considered, the best results are obtained when no sub-grid scale (SGS) model is used. If a SGS model is used, the level of turbulence at the inlet and the choice of the turbulence model constant are shown to have a significant effect on the prediction of plume's spreading and the ceiling flow velocity. The eddy length scale at the inflow does not have significant impact on the results. Comparisons with the available experimental data indicate that FireFOAM is capable of predicting the mean velocity-field well. In the near field region, an under-estimation of the turbulent velocity fluctuations is observed, whereas reasonably good agreement is obtained in the far field.},
  author       = {Ebrahim Zadeh, Setareh and Maragkos, Georgios and Beji, Tarek and Merci, Bart},
  issn         = {0015-2684},
  journal      = {FIRE TECHNOLOGY},
  keywords     = {FireFOAM,Hot air jet plume,Ceiling flow,LES},
  language     = {eng},
  number       = {6},
  pages        = {2093--2115},
  publisher    = {Springer Nature},
  title        = {Large Eddy simulations of the ceiling jet induced by the impingement of a turbulent air plume},
  url          = {http://dx.doi.org/10.1007/s10694-015-0561-3},
  volume       = {52},
  year         = {2016},
}

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