强吹除雪气固两相流流场数值模拟分析  

Numerical Simulation Analysis on Gas-solid Two-phase Flow Field in Snowdrift with Strong-blowing

作　　者：邓洪超[1] 刘腾云[2] 

机构地区：[1]肇庆学院电子信息与机电工程学院,广东肇庆526061 [2]吉林大学机械科学与工程学院,吉林长春130025

出　　处：《肇庆学院学报》2013年第2期27-32,共6页Journal of Zhaoqing University

摘　　要：为研究和分析机场强吹除雪气固两相流流场的压力、速度和雪粒运移规律,依据离散粒子模型建立了强吹除雪气固两相流方程,并采用计算流体力学数值分析方法,对机场强吹除雪的气固两相流流场进行数值模拟分析,得到了气固两相流流场的压力、速度分布曲线和不同时刻下的雪粒分布规律.数值分析结果表明,气固两相流场发展过程迅速,速度分布符合射流理论,湍流强度变化剧烈.数值模拟得到强风强吹除雪的吹雪时间为2.5 s.The gas-solid two-phase flow equation is established based on the Discrete Particle Model for the research and analysis of the field pressure, velocity and the movement regularity of snow grains in the strong- flowing gas-solid flow field. With the numerical simulation of the flow field of the gas-solid two-phase flow with computational fluid dynamics method, the field pressure, velocity curves of the gas-solid flow and the distribu- tion regularity of the snow grains are gained. The numerical results show that the process of the gas-solid two- phase flow field is rapidly developed and the velocity distribution meets jet theory and the turbulence intensity has dramatic changes. The time of the strong-blowing of snow is 2.5 seconds for snow removal using numerical simulation.

关 键 词：气固两相流 流场 离散粒子模型 数值模拟 

分 类 号：TH48[机械工程—机械制造及自动化]