摘要
基于管内气液两相流动理论,建立了低含液管道两相流动数学模型,对管路内气相流场、液滴空间分布进行了研究。结果表明:运用边界层网格与增强壁面函数相结合的方法,能够很好地模拟近壁处流场;水平管内液滴群主要集中在中下部区域;弯头内离心力促使液滴群向外侧运动;受上游弯头的影响,竖直管内存在一对涡核,沿流动方向,竖直管右侧液滴群浓度逐渐下降,液滴群分布范围变大,有向左侧运动的行为。
Based on the theory of gas-liquid flow in the pipeline,a mathematical model of gas-liquid flow with low liquid loading was established.The gas flow fieldand the droplet spatial distribution were studied in detail.Boundary layer mesh and enhanced wall function were combined to simulate the flow field near the wall.It was observed that in horizontal pipes droplets were concentrated on the lower region,while in elbow pipes droplets tended to move to the outside due to the centrifugal force.Affected by the elbow,there was a pair of vortex in the downstream vertical pipe.Droplet concentration near the right wall gradually decreased along the flow direction.The areaoccupied by the droplets expanded,moving left.
作者
管孝瑞
Guan Xiaorui(State Key Laboratory of Safety and Control for Chemicals,Shandong,SINOPEC Qingdao Research Institute of Safety Engineering,Shandong,Qingdao,266071)
出处
《安全、健康和环境》
2019年第1期13-18,共6页
Safety Health & Environment
基金
国家自然科学基金项目(51276200)
国家重点研发计划(2016YFC0801500)
关键词
低含液率
气液两相流
气相流场液滴分布
数值模拟
low liquid loading
gas-liquid flow
gas flow field
droplets distribution
numerical simulation
