Publication: Simulación CFD de tipo euleriana-euleriana de dos fluidos de un lecho fluido bidimensional con incorporación de los efectos del plénum
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2010-07
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2010-07-22
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Abstract
En este proyecto se aborda la simulación numérica de un lecho fluido bidimensional aire-sólido en régimen burbujeante (con velocidad superficial en rango de 1,5 a 2,5 veces la velocidad de mínima fluidización). Para ello se recurre a un modelo de dos fluidos de tipo Euleriano. Para la resolución de las ecuaciones el proyecto recurre al código comercial FLUENT 6.3. En una primera etapa se compara la simulación obtenida de un lecho sin incorporación del plénum de distribución de aire con resultados de simulación disponibles en literatura abierta. En una segunda etapa, y como contribución novedosa del proyecto, se incorporan en el proyecto los efectos del plénum de distribución de aire, lo cual permite una reproducción más realista de las condiciones del flujo de aire en la entrada del aire en el lecho. Los resultados de la simulación son comparados con medidas experimentales existentes. Además, se realiza un barrido de diversas condiciones operativas del lecho y de modelos de resistencia entre aire y sólidos. ____________________________________________________________________________
This project addresses the numerical simulation of a two-dimensional fluid bed air-solid at bubbling regime (surface speed range from 1.5 to 2.5 times the minimum fluidization velocity). This is done through an Eulerian two-fluid model. For the solution of the equations of the model, a commercial code FLUENT 6.3 is used. As a first step, the simulation obtained from a bed without addition of air distribution plenum is compared with simulation results available in open literature. In a second stage, and as new contribution, the project incorporates the effects of air distribution plenum, enabling a more realistic reproduction of the conditions of air flow at the entrance of air into the bed. The simulation results are compared with existing experimental measurements. In addition, this study also undertakes a parametric study of the effects of various operational conditions of the bed and resistance models for the interaction between air and solids.
This project addresses the numerical simulation of a two-dimensional fluid bed air-solid at bubbling regime (surface speed range from 1.5 to 2.5 times the minimum fluidization velocity). This is done through an Eulerian two-fluid model. For the solution of the equations of the model, a commercial code FLUENT 6.3 is used. As a first step, the simulation obtained from a bed without addition of air distribution plenum is compared with simulation results available in open literature. In a second stage, and as new contribution, the project incorporates the effects of air distribution plenum, enabling a more realistic reproduction of the conditions of air flow at the entrance of air into the bed. The simulation results are compared with existing experimental measurements. In addition, this study also undertakes a parametric study of the effects of various operational conditions of the bed and resistance models for the interaction between air and solids.
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Dinámica de fluidos, FLUENT (Programa de aplicación), Simulación numérica