化工学报2016，Vol.67Issue(10)：4135-4145,11.DOI:10.11949/j.issn.0438-1157.20160571
波纹壁面上流动液膜涡的生成特性
Vortex formation characteristics of flow liquid film on corrugated plate
摘要
Abstract
The liquid film flow on the corrugated plate is common in the industrial field. But the characteristics of liquid film flow on the corrugated plate are pretty complicated. Thus, based on the VOF method, the vortex characteristics of the three-dimensional liquid film flow on the inclined corrugated plate are simulated by using FLUENT software. The evolution of vortex structure with time is studied, and the influence of inlet Reynolds number, waviness, wall inclined angle, fluid viscosity and surface tension on the vortex structure in corrugated plate structure is investigated. The results show that the size and shape of vortex are constantly changing with the time evolution and ultimately achieve stability. The change of vortex structure has significant influence on the fluctuation of free surface. With smallerRe and waviness, the vortex is not easy to form in the corrugated structure. With the increase ofRe and waviness, the vortex is produced and its size is increasing, and the morphology of the vortex is changed. Meanwhile, the position of the free surface is increased and there is a phase lag compared with the wave wall. When the wall inclination angle is altered, the vortex characteristics in the corrugated structure change greatly. But the phase of the free surface and the thickness of the liquid film vary slightly. Surface tension has a significant effect on the vortex structure, and it cannot be ignored in the numerical simulation of liquid film flow. Nevertheless, when the fluid viscosity is changed, there is no significant change in the size and shape of the vortex in the corrugated structure. But if the viscosity is small and the surface tension is neglected, the thickness of the liquid film becomes thin.These conclusions are very important to predict and understand the characteristics of liquid film flow in industrial field.关键词
气液两相流/波纹壁面/涡结构/数值模拟/影响因素/计算流体力学Key words
gas-liquid flow/corrugated plate/vortex structure/numerical simulation/influence factors/CFD分类
化学化工引用本文复制引用
刘梅,刘秋升,吴正人,王松岭,宋朝匣..波纹壁面上流动液膜涡的生成特性[J].化工学报,2016,67(10):4135-4145,11.基金项目
高等学校博士学科点专项科研基金项目（20110036110009）；河北省自然科学基金项目（E2016502088）。@@@@Foundation item：supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China (20110036110009) and the Natural Science Foundation of Hebei Province (E2016502088) （20110036110009）
