000			02003nab a2200229 4500
005			20260520004608.0
008			260224s2018 xxu ing
041			_aInglés
245	0	0	_aProtective Walls Against Effects of Vapor Cloud Fast Deflagration: CFD Recommendations for Design
260			_a _b _cmar. 2018
270			_a09/10/2020 ; 09/10/2020
300			_a11 p. ; 56-66
520			_aProtective walls are a well-known and efficient way to mitigate overpressure effects of explosions. For detonation there are multiple published investigations concerning interactions of blast waves and walls, whereas for deflagration no well-adapted and rigorous method has been reported in the literature. This article describes the validation of a new computational fluid dynamics (CFD) modeling approach for fast deflagrations. In a first step, the vapor cloud explosion involving a fast deflagration is substituted by an equivalent vessel burst problem. The purpose of this step is to avoid reactive flow computations. In a second step, CFD is used to model the pressure propagation from the equivalent (nonreactive) vessel burst problem. After verifying the equivalence of the fast deflagration and the vessel burst problem in the first step, the ability of two CFD codes FLACS and Europlexus is examined for situations with and without barriers. Parametric analysis by means of numerical simulations is performed to investigate the efficiency of finite barriers to mitigate blast waves. Another parametric study shows how the maximum overpressure value in the shade of the barrier depends on the magnitude of the incoming overpressure wave. On this basis, several recommendations are suggested for designing protective walls.
581			_a1
773	0		_tProcess safety progress _g
942			_cARTICULO
100	1		_aVyazmina, Elena _959751
100	1		_aJallais, Simon _959752
100	1		_aBeccantini, Alberto _959753
100	1		_aTrélat, Sophie _959754
999			_c193603 _d193603