摘要
基于Euler-Eulerian两相流模型,采用CFD软件对低含液输气管道内不同粒径分布的液滴群空间分布以及随时间的变化规律进行了研究。利用边界层网格与增强壁面函数得到了近壁面处边界层内的速度分布:水平管内液滴群主要集中在管路底部区域;弯头内二次流促使液滴群向弯头外侧运动;上弯头后的竖直管内二次流依然存在,液滴群主要集中在迎流侧;液滴群的波动随着时间具有周期性。
Based on the theory of Eulerian gas-liquid flow model,a mathematical model of gas-liquid flow with low liquid loading was established by CFD software. Droplet groups with different particle size distribution were considered.Droplet spatial distribution and variation with time were studied in detail. Velocity distribution in the boundary layer near the wall can be obtained with combining boundary layer mesh with enhanced wall function. Droplets are concentrated on the lower region of the horizontal pipe. Centrifugal force in the elbow promotes droplets to move to the outside. Affected by the elbow,there is a pair of vortexes in the vertical pipe downstream of the elbow. Droplets are mainly concentrated on the upstream side in the vertical pipe. The droplets fluctuation moves periodically over time.
作者
管孝瑞
GUAN Xiaorui(State Key Laboratory of Safety and Control for Chemicals,SINOPEC Research Institute of Safety Engineering,Qingdao 266071,Shandong,China)
出处
《实验室研究与探索》
CAS
北大核心
2019年第5期36-41,共6页
Research and Exploration In Laboratory
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
输气管道
液滴分布
数值模拟
low liquid loading
gas pipeline
droplets distribution
numerical simulation
