摘要
煤炭自燃火灾严重影响煤炭的安全生产和储藏。本文建立了二维煤堆自燃过程的热流方程和氧气传输方程,对煤堆的自燃过程进行了数值模拟,探明了煤堆温度随时间的变化规律,分析了煤堆的不同堆放方式对煤堆传热与燃烧的影响。为煤堆自燃过程的研究提供了理论基础。
Spontaneous combustion of coal stockpile is a key problem to be solved for safety in coal production and storage. It is very needed to get detailed knowledge of this process. In this paper, a 2D mathematical model is established to describe the spontaneous combustion process of coal stockpiles. The governing equations include heat transfer equation and oxygen transfer equation. The detailed heating - up process of a coal stockpile is obtained and the effects of different stacking types are also analysed. These results offer theoretical bases for luther studying spontaneous combustion process of coal stockpiles.
出处
《矿冶》
CAS
2008年第1期30-33,共4页
Mining And Metallurgy
基金
国家自然科学基金项目(50406025)
关键词
煤堆
自燃
数值模拟
coal stockpiles
spontaneous combustion
numerical simulation
