000			02134nab a2200229 4500
005			20260520003106.0
008			260224s2013 xxu ing
041			_aInglés
245	0	0	_aMultiscale Study of Reactive Dense Fluidized Bed for FCC Regenerator
260			_a _b _cnov./dic. 2013
270			_a15/07/2014 ; 15/07/2014
300			_a19 p. ; 1073-1092
520			_aTranscripción del resumen del autor: This study deals with reactive gas particle flows like the coke combustion during the regeneration of FCC particles. In this kind of reactive flow, the global reaction rate is usually bad predicted. In a first approximation, the chemical scheme can be the reason because of the limitation of its modeling. It is usually based on macroscopic experimental results. The link between these macroscopic measurements and a local kinetics of the heterogeneous reaction occuring at the gas -particle interface is not confirmed. Results of kinetics coming from experimental measurements are used and we try to highlight the problems that appear when the same kinetics are used at different scales. In common industrial computations, coarse meshes are used to solve continuity equations. Averaged or filtered Navier-Stokes and species continuity equations have to be solved in which additional correlation terms appear because of non-linear terms in the original equations, including reaction rate correlation. Therefore a multiscale analysis is performed in order to improve the modeling of this terms. This paper, shows that the eulerian formulation of kinetics has to be improved due to the impact of the particle volume fraction on the reaction rate and the necessity to develop a subgrid model for the reaction rate due to the natural clustering that appears in gas -particle flows and non-linear additional terms appearing in filtered equations.
581			_a6
773	0		_tOil and Gas Science and Technology _g68
942			_cARTICULO
100	1		_aMoula, G. _953962
100	1		_aNastoll, W. _953963
100	1		_aSimonin, O. _953964
100	1		_aAndreux, R. _953965
999			_c188372 _d188372