Title: Coupling a CFD code with a solid-phase combustion model

Authors: Antonio Galgano, Colomba Di Blasi

Addresses: Dipartimento di Ingegneria Chimica, Universita degli Studi di Napoli 'Federico II', P.le V. Tecchio, 80125 Napoli, Italy. ' Dipartimento di Ingegneria Chimica, Universita degli Studi di Napoli 'Federico II', P.le V. Tecchio, 80125 Napoli, Italy

Abstract: A one-dimensional and unsteady model for the gasification/combustion of thick wood is developed and coupled with a two-dimensional CFD model for the gaseous phase processes, solved by the commercial code CFX4.4. Simulations of the combustion of single wood logs, as obtained with the coupled solid- and gas-phase models and with a solid-phase model alone, are compared with experimental measurements. Acceptable agreement is obtained in the first case, whereas the solid-phase model alone highly underestimates the conversion time and overestimates the mean mass loss rates. A two-dimensional formulation of the equations for the solid-phase does not affect significantly the global parameters.

Keywords: biomass combustion; modelling; gasification; CFD; solid-phase models; computational fluid dynamics.

DOI: 10.1504/PCFD.2006.010037

Progress in Computational Fluid Dynamics, An International Journal, 2006 Vol.6 No.4/5, pp.287 - 302

Published online: 09 Jun 2006 *

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