Research Article Open Access

The 2D Eulerian Approach of Entrained Flow and Temperature in a Biomass Stratified Downdraft Gasifier

A. Rogel and Jasni Aguillón

Abstract

This paper describes a “1-D+2-D” numerical model used to simulate the gasification of pine wood pellets in a stratified downdraft gasifier whereby Eulerian conservation equations are solved for particle and gas phase components, velocities and specific enthalpies. The model takes into account the biomass particle process such as heating up, drying, primary pyrolysis of biomass, secondary pyrolysis of tar, homogeneous reactions and heterogeneous combustion/ gasification reactions and particle size change. This CFD model can be used to predict temperature profiles, gas composition, producer gas lower heating value and carbon conversion efficiency and the reactor performance when operating parameters and feed properties are changed. The standard κ-ε and RNG κ-ε models were used to simulate the turbulent flow conditions.

American Journal of Applied Sciences
Volume 3 No. 10, 2006, 2068-2075

DOI: https://doi.org/10.3844/ajassp.2006.2068.2075

Submitted On: 2 September 2006 Published On: 31 October 2006

How to Cite: Rogel, A. & Aguillón, J. (2006). The 2D Eulerian Approach of Entrained Flow and Temperature in a Biomass Stratified Downdraft Gasifier . American Journal of Applied Sciences, 3(10), 2068-2075. https://doi.org/10.3844/ajassp.2006.2068.2075

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Keywords

  • CFD fixed-bed simulation
  • mathematical modeling
  • stratified downdraft gasifier
  • Eulerian approach
  • RNG κ-ε model