摘要
应用CFD软件求解三维湍流N-S方程,对不同温差下竖直矩形管道内气固两相流场进行三维数值模拟计算。通过数值模拟,得到由于温度场的不同,使气固两相流的速度场发生改变。通过得到颗粒物的体积浓度的分布,分析在温度场中由于存在热泳力,从而对颗粒物浓度分布产生影响,并得到对不同粒径的颗粒物的浓度分布影响的规律。
The three-dimensional numerical calculation is applied to the gas-solid two-phase flow in different temperature fields in the rectangular pipe. The N-S equations of the three-dimensional turbulence are derived with the CFD software. The results show that the velocity field of the particle is changed in different temperature fields. From the distribution of the particle＇s volume concentration,it is concluded that the difference of themophoresis force existing in the temperature leads to the difference of particles＇ concentration distribution. The law of the different particles＇ concentration distribution in the temperature field is obtained.
出处
《现代电力》
2010年第2期53-57,共5页
Modern Electric Power
基金
北京市自然科学基金项目(3092016)
教育部博士点基金(200800791005)
关键词
气固两相流
热泳
可吸入颗粒物
数值模拟
温度差
gas-solid two-phase flow
thermophoresis
inhalant particle
numerical simulation
temperature difference
