生物质秸秆气流干燥数学模型及数值模拟  

The Mathematical Model and Numerical Simulation for Pneumatic Drying of Biomass Stalk

作　　者：吕薇[1] 李彦栋[1] 孙宏伟[1] 姚志跃[1] 

机构地区：[1]哈尔滨理工大学机械与动力工程学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2011年第3期108-111,115,共5页Journal of Harbin University of Science and Technology

摘　　要：根据气固两相流理论,通过分析生物质秸秆干燥过程的特点,建立了生物质秸秆在水平直管气流干燥过程中传热传质数学模型,并采用数值方法对模型进行了求解,对干燥过程中物料和空气的含湿量、温度及速度的变化进行模拟仿真.同时分别就气固比和气流初始温度对干燥效果的影响进行模拟,并分析了现象产生的原因.Through the analysis of the characteristics of the drying process of biomass stalk,a numerical model to describe the heat and mass transfer process in pneumatic drying of biomass stalk in straight level has been presented,based on two-phase flow theory.The model has been used to simulate the change of moisture content,temperature and change of speed of the materials and air in the drying process.The influences of gas-solid mass ratio and initial temperature to the drying process were simulated.The cause of related phenomena is analyzed.

关 键 词：生物质 气流干燥 模拟仿真 数学模型 传热传质 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]