积雪流体化机理及气流清雪的气固两相流分析  

Fluidization mechanism of snow accumulation and gas-solid two-phase analysis of clearing snow by air flow

作　　者：薛加磊 金向阳[1] 于子善 XUE Jia-lei;JIN Xiang-yang;YU Zi-shan(School of Light Industry,Harbin University of Commerce,Harbin 150028,China)

机构地区：[1]哈尔滨商业大学轻工学院

出　　处：《哈尔滨商业大学学报（自然科学版）》2019年第3期350-354,372,共6页Journal of Harbin University of Commerce：Natural Sciences Edition

基　　金：哈尔滨商业大学研究生创新科研资金项目(编号:YJSCX2018-528HSD)

摘　　要：结合风吹雪现象这一典型自然现象分析积雪流体化的机理,总结雪粒运动基本方式及其存在形式,提出气流清雪的必要条件.利用拟流体模型建立气流清雪作业气固两相流的控制方程并进行数值模拟,分析清雪前气流轴线及两侧的速度分布规律及清雪作业过程中雪相的运动规律及湍流旋涡对风场分布和雪相运动的影响.This paper analyzed the mechanism of snow fluidization combined with the typical natural phenomenon of wind blowing snow phenomenon,summarized the basic methods of snow particle movement and its existing forms,proposed the necessary conditions for the airflow clearing snow.Established the control equations of gas-solid two-phase flow in airflow and snow removal operation based on quasi-fluid model and making numerical simulation.Analyzed the velocity distribution of the central axis and two sides of the airflow before clearing snow.Demonstrated the movement law of snow phase during snow-clearing operation,analyzed the influence of turbulent vortex on wind field distribution and snow-phase motion.

关 键 词：流体化 气流清雪 拟流体模型 气固两相流 湍流旋涡 

分 类 号：P426.635[天文地球—大气科学及气象学]