000			02102nab a2200217 4500
005			20260520001114.0
008			260224s2016 xxu ing
041			_aInglés
245	0	0	_aDoorway Flows Induced by the Combined Effects of Natural and Forced Ventilation in Case of Multi-compartments Large-Scale Fire Experiments
260			_a _b _cmar. 2016
270			_a26/07/2016 ; 26/07/2016
300			_a25 p. ; 489-514
520			_aTranscripción del resúmen realizada por el autor: This paper deals with the combined effects of fire and mechanical ventilation on the bi-directional flow occurring at a doorway for a fire scenario involving a three-compartment assembly. Based on large-scale fire tests, the analysis focused on three issues: the velocity profiles at the doorway, the location of the neutral plane, and the inflow and outflow rates entering and leaving the fire compartment. The combined effect of fire and mechanical ventilation leads to different flow regimes depending on whether the smoke outflow (or the fresh air inflow) and the forced ventilation are directed in the same direction or in opposite directions. The theoretical description based on the Bernoulli approach for natural convection flow is applied in case of the combined effect of buoyancy and inertia. Five configurations are identified: one-directional flow of smoke, bi-directional flow with upper smoke flow as dominant, natural convection case with equal smoke and fresh air flows, bi-directional flow with lower fresh air flow as dominant, and one-directional flow with only fresh air flow. These regimes are observed experimentally and clearly defined theoretically. A satisfactory agreement is obtained between the theory and the experiments. This approach permits identifying the critical conditions under which one-directional flow is encountered at the doorway.
581			_a2
773	0		_tFire Technology _g52
942			_cARTICULO
100	1		_aPretrel, Hugues _955529
100	1		_aKoched, Amine _955530
100	1		_aAudouin, Laurent _955531
999			_c189670 _d189670