摘要
本论文根据分形理论及测定得到的准格尔褐煤在燃烧过程中颗粒的物性参数建立表征煤焦颗粒的分形体模型。 通过分形体上突入逾渗和普通逾渗模拟,研究在燃烧过程中由于颗粒内部分形体结构的改变造成的传输特性和反应特性 的变化情况。结果表明,建立的分形体模型能够很好的表征煤焦颗粒结构特征,逾渗模拟的结果与实际情况基本相符。
In this paper, we construct fractal models to represent the coal char particles. It is based on the fractal theory and physical structure parameters of coal char particles (Zhunger lignite) with different burnout ratios. The transmission and reaction characters of coal char particles and their changes during combustion are studied with the help of intrude percolation and ordinary percolation simulation in fractal models. It is shown that fractal models have satisfied ability to represent physical structure characters of coal char particles. Percolation simulation results approximately accord to the practical situation.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2005年第1期171-173,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金委员会与中国节能投资公司联合研究基金资助项目(N。50176014)国家博士后基金资助项目(No.2003033460)华中科技大学博士后基金资助项目(No.2003016)
关键词
煤焦颗粒
分形
逾渗
coal/char particle
fractal
percolation
