化工学报2012，Vol.63Issue(7)：2051-2058,8.DOI:10.3969/j.issn.0438-1157.2012.07.008
基于离散单元法的丝状颗粒传热数学模型
Model of heat transfer in filamentous granular materials based on discrete element method
摘要
Abstract
Filamentous particle is a kind of non-spherical particles with large aspect ratio. It has been widely applied in industrial and agricultural processes. However, the heat transfer phenomenon about particles is not well understood, especially the filamentous particle. In this study, in order to describe the heat transfer process of filamentous particle, a new mathematical model based on the discrete element method was proposed through the analysis of heat transfer mechanisms. The impact heat transfer between particles, the internal heat conduction and the convection heat exchange between gas and particles were considered in this model, and then it was used to numerically study the heat transfer process of filamentous particles in a fixed bed. Comparing the mechanisms with each other, it showed that the convection heat exchange had greater contribution to the total heat transfer. In addition, the simulation results revealed some internal temperature rules in filamentous particles under different operating conditions.关键词
丝状颗粒/传热模型/离散单元法/数值模拟Key words
filamentous particles model of heat transfer/ discrete element method/ numerical simulation分类
化学化工引用本文复制引用
朱立平,袁竹林,闫亚明,罗登山,王宏生,李斌..基于离散单元法的丝状颗粒传热数学模型[J].化工学报,2012,63(7):2051-2058,8.基金项目
国家重点基础研究发展计划项目(2010CB227002-05) （2010CB227002-05）
郑州烟草研究院烟草工艺重点实验室基金项目. （）
