Pyrolysis and gasification of single biomass particle _ new openFoam solver

21st Fluid Mechanics Conference

物理学;力学

Kwiatkowski, K.^1,2 ; Zuk, P.J.^1 ; Dudyn´ski, M.^3,4 ; Bajer, K.^1,2,5

Faculty of Physics, University of Warsaw, Hoza 69, 00-691, Warsaw, Poland^1

Interdisciplinary Centre for Mathematical and Computational Modelling, Pawin´skiego 5a, 02-106, Warsaw, Poland^2

Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Banacha 2, 02-097, Warsaw, Poland^3

Modern Technologies and Filtration, Przybyszewskiego 73/77 lok. 8, 01-824 Warsaw, Poland^4

University Centre for Environmental Studies, University of Warsaw, Zwirki i Wigury 93, 02-089 Warsaw, Poland^5

关键词: Biomass Particle;    Computational environments;    Porous matrixs;    Pyrolysis and gasification;    Solid material;    Thermal conversion;    Thermal equilibriums;    Wood particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/530/1/012015/pdf
DOI  :  10.1088/1742-6596/530/1/012015

学科分类：力学，机械学

来源: IOP

【 摘 要 】

We present a new solver biomassGasificationFoam that extended the functionalities of the well-supported open-source CFD code OpenFOAM. The main goal of this development is to provide a comprehensive computational environment for a wide range of applications involving reacting gases and solids. The biomassGasificationFoam is an integrated solver capable of modelling thermal conversion, including evaporation, pyrolysis, gasification, and combustion, of various solid materials. In the paper we show that the gas is hotter than the solid except at the centre of the sample, where the temperature of the solid is higher. This effect is expected because the thermal conductivity of the porous matrix of the solid phase is higher than the thermal conductivity of the gases. This effect, which cannot be considered if thermal equilibrium between the gas and solid is assumed, leads to precise description of heat transfer into wood particles.