Abdellatif Belcadi - Academia.edu (original) (raw)
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Papers by Abdellatif Belcadi
International Affairs, 1949
El desarrollo tecnológico, especialmente en el área de la información y la comunicación, ofrece a... more El desarrollo tecnológico, especialmente en el área de la información y la comunicación, ofrece a la sociedad herramientas útiles en diferentes campos, entre ellos el de la educación. Por otra parte, la sociedad del conocimiento plantea nuevos retos a los sistemas educativos y a las personas que deben continuar un proceso de formación vitalicio. En este contexto, la educación a distancia se erige como una respuesta decisiva viable ante la extensa demanda de educación, particularmente por personas que no pueden acceder a la formación presencial. No obstante, es poco lo que se conoce sobre esta modalidad y, por ello, surgen interrogantes que es preciso responder, tales como: qué es la educación a distancia, cuál es su historia, en qué se diferencia de la educación presencial, cuáles son sus características, ventajas y limitaciones, a quién está dirigida y, finalmente, cuál es su nivel de reconocimiento y aceptación en la sociedad actual. Estos interrogantes motivaron la investigación cuyos resultados se presentan en este documento. Palabras clave: educación, enseñanza y formación, métodos de enseñanza, educación a distancia.
This study has identify useful reduced mechanisms that can be used in computational fluid dynamic... more This study has identify useful reduced mechanisms that can be used in computational fluid dynamics (CFD) simulation of the flow field, combustion and emissions of gas turbine engine combustors. Reduced mechanisms lessen computa-tional cost and possess the ability to accurately predict the overall flame structure, including gas temperature and spe-cies as CH4, CO and NOx. The S-STEP algorithm which based on computational singular perturbation method (CSP) is performed for reduced the detailed mechanism GRI-3.0. This algorithm required as input: the detailed mechanism, a numerical solution of the problem and the desired number of steps in the reduced mechanism. In this work, we present a 10-Step reduced mechanism obtained through S-STEP algorithm. The rate of each reaction in the reduced mechanism depends on all species, steady-state and non-steady state. The former are calculated from the solution of a system of steady-state algebraic relations with the point relaxation algorithm. Ba...
Energy and Power Engineering, 2012
This study has identify useful reduced mechanisms that can be used in computational fluid dynamic... more This study has identify useful reduced mechanisms that can be used in computational fluid dynamics (CFD) simulation of the flow field, combustion and emissions of gas turbine engine combustors. Reduced mechanisms lessen computational cost and possess the ability to accurately predict the overall flame structure, including gas temperature and species as CH 4 , CO and NO x. The S-STEP algorithm which based on computational singular perturbation method (CSP) is performed for reduced the detailed mechanism GRI-3.0. This algorithm required as input: the detailed mechanism, a numerical solution of the problem and the desired number of steps in the reduced mechanism. In this work, we present a 10-Step reduced mechanism obtained through S-STEP algorithm. The rate of each reaction in the reduced mechanism depends on all species, steady-state and non-steady state. The former are calculated from the solution of a system of steady-state algebraic relations with the point relaxation algorithm. Based on premixed code calculations, The numeric results which were obtained for 1 atm Pressure 30 atm and 1.4 0.6 on the basis of the ten steps global mechanism, were compared with those computed on the basis of the detailed mechanism GRI-3.0. The 10-step reduced mechanism predicts with accuracy the similar results obtained by the full GRI-3.0 mechanism for both NO x and CH 4 chemistry.
International Affairs, 1949
El desarrollo tecnológico, especialmente en el área de la información y la comunicación, ofrece a... more El desarrollo tecnológico, especialmente en el área de la información y la comunicación, ofrece a la sociedad herramientas útiles en diferentes campos, entre ellos el de la educación. Por otra parte, la sociedad del conocimiento plantea nuevos retos a los sistemas educativos y a las personas que deben continuar un proceso de formación vitalicio. En este contexto, la educación a distancia se erige como una respuesta decisiva viable ante la extensa demanda de educación, particularmente por personas que no pueden acceder a la formación presencial. No obstante, es poco lo que se conoce sobre esta modalidad y, por ello, surgen interrogantes que es preciso responder, tales como: qué es la educación a distancia, cuál es su historia, en qué se diferencia de la educación presencial, cuáles son sus características, ventajas y limitaciones, a quién está dirigida y, finalmente, cuál es su nivel de reconocimiento y aceptación en la sociedad actual. Estos interrogantes motivaron la investigación cuyos resultados se presentan en este documento. Palabras clave: educación, enseñanza y formación, métodos de enseñanza, educación a distancia.
This study has identify useful reduced mechanisms that can be used in computational fluid dynamic... more This study has identify useful reduced mechanisms that can be used in computational fluid dynamics (CFD) simulation of the flow field, combustion and emissions of gas turbine engine combustors. Reduced mechanisms lessen computa-tional cost and possess the ability to accurately predict the overall flame structure, including gas temperature and spe-cies as CH4, CO and NOx. The S-STEP algorithm which based on computational singular perturbation method (CSP) is performed for reduced the detailed mechanism GRI-3.0. This algorithm required as input: the detailed mechanism, a numerical solution of the problem and the desired number of steps in the reduced mechanism. In this work, we present a 10-Step reduced mechanism obtained through S-STEP algorithm. The rate of each reaction in the reduced mechanism depends on all species, steady-state and non-steady state. The former are calculated from the solution of a system of steady-state algebraic relations with the point relaxation algorithm. Ba...
Energy and Power Engineering, 2012
This study has identify useful reduced mechanisms that can be used in computational fluid dynamic... more This study has identify useful reduced mechanisms that can be used in computational fluid dynamics (CFD) simulation of the flow field, combustion and emissions of gas turbine engine combustors. Reduced mechanisms lessen computational cost and possess the ability to accurately predict the overall flame structure, including gas temperature and species as CH 4 , CO and NO x. The S-STEP algorithm which based on computational singular perturbation method (CSP) is performed for reduced the detailed mechanism GRI-3.0. This algorithm required as input: the detailed mechanism, a numerical solution of the problem and the desired number of steps in the reduced mechanism. In this work, we present a 10-Step reduced mechanism obtained through S-STEP algorithm. The rate of each reaction in the reduced mechanism depends on all species, steady-state and non-steady state. The former are calculated from the solution of a system of steady-state algebraic relations with the point relaxation algorithm. Based on premixed code calculations, The numeric results which were obtained for 1 atm Pressure 30 atm and 1.4 0.6 on the basis of the ten steps global mechanism, were compared with those computed on the basis of the detailed mechanism GRI-3.0. The 10-step reduced mechanism predicts with accuracy the similar results obtained by the full GRI-3.0 mechanism for both NO x and CH 4 chemistry.