化工学报Issue(12)：4767-4774,8.DOI:10.3969/j.issn.0438-1157.2014.12.017
矩形截面螺旋管内气液两相流型转换数值模拟
Numerical simulation of flow pattern transition for gas-liquid two-phase flow in helical square ducts
摘要
Abstract
A numerical analysis of air-water two-phase flow characteristics in helical square ducts was made using the CLSVOF (coupled level set and volume of fluid) multiphase model. The range of gas superficial velocity was 0.1—2.5 m·s−1, and liquid superficial velocity was 0.09—4.5 m·s−1. An investigation of effects of curvature diameter and helix angle on flow pattern transition was made. The air-liquid two-phase flow pattern map was drafted under different flow conditions. Compared with the traditional interface tracking method, the CLSVOF method could get a more accurate gas-liquid interface. With helix angle increasing, the conversion boundary from plug flow to bubbly flow moved towards decreasingUL, but only slightly. The conversion boundary from plug flow to slug flow moved towards decreasingUL.With coil diameter increasing, the conversion boundary from plug flow to bubbly flow moved towards decreasingUL.The conversion boundary from plug flow to slug flow moved towards decreasingULand increasingUG.Flow pattern transition was different from Murai flow pattern.关键词
螺旋管/气液两相流/CLSVOF模型/数值模拟/计算流体力学Key words
helical ducts/gas-liquid flow/CLSVOF model/numerical simulation/computational fluid dynamics分类
能源科技引用本文复制引用
周云龙,张立彦..矩形截面螺旋管内气液两相流型转换数值模拟[J].化工学报,2014,(12):4767-4774,8.基金项目
国家自然科学基金项目（51276033）。@@@@supported by the National Natural Science Foundation of China (51276033) （51276033）
