摘要
应用STAR-CCM+模拟软件和基于VOF模型基础上的Lagrange多相流模型,在流体入口速度为0.5～1.5m/s,系统固体颗粒体积分率为1%～8%的条件下,研究了汽液固三相循环流化床蒸发管内壁面处磨损率的轴向分布以及其随流体入口速度、固体颗粒体积含量和温度等操作参数的变化规律.结果表明:沿蒸发管轴向方向上,壁面处磨损率逐渐增加,并随壁面处固含率、液体入口速度和固体颗粒体积含量的增加而增加.外加热温度对蒸发管中下部的磨损率影响较小,对中上部的影响较大,随着外加热温度的升高,壁面处磨损率降低.
To investigate the inner wall wear performance in vapor-liquid-solid three phase evaporation tube,software STAR-CCM＋ was used to simulate the vapor-liquid-solid three phase flow.The Lagrange multi-phase flow model based on the Volume of Fluid（VOF） algorithm was used to describe the effect of the inlet velocity,the particles hold up and temperature on inner wall wear rate.The research results showed that the inner wall wear rate increased along the axis of evaporation tube with increase of the inlet velocity and the particles hold up;inner wall wear rate decreased with increase of temperature.And the inner wall wear rate along axis of evaporation tube is different at the same temperature.
出处
《河北工业大学学报》
CAS
北大核心
2011年第3期15-19,44,共6页
Journal of Hebei University of Technology
基金
河北省自然科学基金(B2008000008)
关键词
汽液固三相
蒸发器
磨损率
固含率
数值模拟
STAR-CCM+
vapor-liquid-solid three-phase
evaporator
wear rate
particle hold up
numerical simulation
STAR-CCM＋
