On Heat Transfer Analysis for a Sphere of Combustible Material of Variable Thermal Conductivity

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Lebelo, Ramoshweu Solomon^1 ; Mahlobo, Radley Kebarapetse^1 ; Adesanya, Samuel Olumide^1,2 ; Muthuvalu, Mohana Sundaram^3

Vaal University of Technology, Mathematics Department, Andries Potgieter Blvd, Vanderbijlpark

1911, South Africa^1

Redeemer's University, Mathematical Sciences Department, PMB 230 Ede, Osun State, Nigeria^2

Universiti Teknologi PETRONAS, Fundamental and Applied Sciences Department, Seri Iskandar, Perak Darul Ridzuan

32610, Malaysia^3

关键词: Carbon-containing materials;    Combustible materials;    Combustion pro-cess;    Exothermic chemical reaction;    Heat transfer analysis;    Semi-implicit finite difference methods;    Temperature dependent;    Variable thermal conductivity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012062/pdf
DOI  :  10.1088/1757-899X/269/1/012062

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This article considers an exothermic chemical reaction taking place in a stockpile of reactive material with a thermal conductivity that is temperature dependent. The study is modeled in a spherical domain whose carbon-containing material reacts spontaneously with the oxygen trapped within the system. The combustion process results with a complicated process that is nonlinear in nature, and the energy equation used to govern the problem is tackled numerically with the semi-implicit finite difference method (FDM). The results are depicted graphically and discussed to give a theoretical understanding of the heat transfer analysis during combustion.