Výsledky vyhledávání - "Rabah Mehaddi"

Emptying-filling boxes with non-Boussinesq plumes and fountains

Autor: M. Koutaiba, Pascal Boulet, Fabien Candelier, O. Vauquelin, Rabah Mehaddi

Publikováno v: Physical Review Fluids
Physical Review Fluids, American Physical Society, 2021, 6 (8), ⟨10.1103/PhysRevFluids.6.083801⟩
Physical Review Fluids, 2021, 6 (8), pp.083801. ⟨10.1103/PhysRevFluids.6.083801⟩
Physical Review Fluids, 2021, 6 (8), ⟨10.1103/PhysRevFluids.6.083801⟩

International audience; In the paper the dynamics of the simultaneously filling and emptying of a box is studied theoretically and experimentally. Both situations, consisting of negatively buoyant (fountains) and positively buoyant (plumes) discharge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::406e09677712bfea7347ad8cd9216e83
https://hal.archives-ouvertes.fr/hal-03512399

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Experimental Characterization of a Smoke Flow in a Small Length Corridor

Autor: Pascal Boulet, J.-Y. Morel, P. Laboureur, A. Braconnier, S. Haouari‐harrak, S. Becker, Anthony Collin, Rabah Mehaddi

Publikováno v: Fire Technology
Fire Technology, Springer Verlag, 2020, 56 (2), pp.883-889. ⟨10.1007/s10694-019-00895-9⟩

Smoke propagation into a corridor configuration is an important issue in fire safety engineering. One important characteristic is the smoke behaviour in the steady state, namely, the smoke layer thickness, its mean temperature and its mean velocity.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d746a9a2e79de4628ce109c6f8d05a3
https://doi.org/10.1007/s10694-019-00895-9

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Numerical study of the combustion regimes in naturally-vented compartment fires

Autor: Bouaza Lafdal, Racha Djebbar, Pascal Boulet, Rabah Mehaddi, ElMehdi Koutaiba, Tarek Beji, Jose Luis Torero

Publikováno v: Fire Safety Journal. 131:103604

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc89b6409fdfc6b46c8d741358d1031a
https://doi.org/10.1016/j.firesaf.2022.103604

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Experimental study of radiation attenuation using water curtains in a reduced-scale deck of a ro-ro ship

Autor: Davood Zeinali, Florian Ingold, Zoubir Acem, Rabah Mehaddi, Gilles Parent, Anthony Collin, Pascal Boulet

Publikováno v: ZENODO

Experiments have been conducted at LEMTA to evaluate the containment of thermal radiation using water curtains in a model setup of a ro-ro ship’s cargo deck with a scale of 1 to 12.5, providing data for future numerical simulations. The water curta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18b1b47aeb7c545b3c61f747f30cf2c9

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Fire Plume in a Sharply Stratified Ambient Fluid

Autor: Anthony Collin, Pascal Boulet, Samuel Vaux, Rabah Mehaddi

Publikováno v: Fire Technology
Fire Technology, Springer Verlag, 2021, ⟨10.1007/s10694-021-01100-6⟩

The present work analyses theoretically and numerically fire plumes evolving in a two-layer stratified environment. The ambient fluid consists of a lower cold (heavy) layer and an upper warm (light) layer with a sharp interface. The fire plume is con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f293c5252d1a0b6e554a9a4c0bb6dfe3
https://hal.univ-lorraine.fr/hal-03170300

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Upward versus downward non-Boussinesq turbulent fountains

Autor: Samuel Vaux, Olivier Vauquelin, Fabien Candelier, Rabah Mehaddi

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2019, 867, pp.374-391. ⟨10.1017/jfm.2019.149⟩
Journal of Fluid Mechanics, 2019, 867, pp.374-391. ⟨10.1017/jfm.2019.149⟩

Turbulent miscible fountains discharged vertically from a round source into quiescent uniform unbounded environments of density $\unicode[STIX]{x1D70C}_{0}$ are investigated numerically using large-eddy simulations. Both upward and downward fountains

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa45122b2bf4b72fa006ec1886ab182d
https://hal.archives-ouvertes.fr/hal-02410595

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Virtual origin correction for a fire plume in a room under displacement ventilation regime

Autor: G. Giovannelli, S. Haouari Harrak, Pascal Boulet, El Mehdi Koutaiba, Rabah Mehaddi, S. Becker

Publikováno v: International Journal of Thermal Sciences
International Journal of Thermal Sciences, Elsevier, 2019, 136, pp.243-253. ⟨10.1016/j.ijthermalsci.2018.10.023⟩

The paper examines experimentally and theoretically the virtual origin position of a fire plume in the so-called simultaneous filling and emptying box problem. Small-scale experiments are carried out with a pool fire placed into a rectangular box wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf3ae3417e64070c3183c1584a811051
https://hal.archives-ouvertes.fr/hal-01943866

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Use of a water mist for smoke confinement and radiation shielding in case of fire during tunnel construction

Autor: J.-Y. Morel, J. Telassamou, Pascal Boulet, Zoubir Acem, Anthony Collin, Rabah Mehaddi, S. Becker, F. Demeurie

Publikováno v: International Journal of Thermal Sciences
International Journal of Thermal Sciences, Elsevier, 2020, 148, pp.106156. ⟨10.1016/J.IJTHERMALSCI.2019.106156⟩

The ability of a water curtain to stop smoke and radiation from a fire is investigated in the particular configuration of a tunnel during construction work. Experiments are conducted in reduced scale ( 1 / 22 n d ) in a blind tunnel and simulations a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ff4f365ec0a5a9a184e363afab15bc2
https://doi.org/10.1016/j.ijthermalsci.2019.106156

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