摘要
The gas-liquid two-phase swirl flow can increase the gas-liquid two-phase contact area and enhance the heat and mass transfer efficiency between gas and liquid.The swirl flow has important practical application value for promoting gas hydrate formation and ensuring the flow safe of natural gas hydrate slurry.The experimental section was made of plexiglass pipe and the experimental medium was air and water.The flow pattern of the gas-liquid two-phase swirl flow in the horizontal pipe was divided,according to a high-definition camera and the overall characteristics of the gas-liquid interface.The flow pattern map of the gas-liquid two-phase swirl flow in a horizontal pipe was studied.The influence of the flow velocity and vane parameters on pressure drop was investigated.Two types of gas-liquid two-phase swirl flow pressure drop models was established.The homogeneous-phase and split-phase pressure drop models have good prediction on swirl bubble flow,swirl dispersed flow,swirl annular flow and swirl stratified flow,and the predictive error band is not more than 20%.
气液两相螺旋流动流可以增加气液两相接触面积,并提高气液传热传质效率。螺旋流动对促进天然气水合物形成和确保天然气水合物浆体的流动安全具有重要的实际应用价值。本实验装置由有机玻璃管制成,实验介质为空气和水。根据高分辨率摄像机和气液界面的整体特性,将水平管内气液两相螺旋流的流型进行了划分。研究了水平管内气液两相螺旋流的流型图,和流速和叶片参数对压降的影响。建立了两种类型的气液两相螺旋流压降模型,结果表明均相和分相压降模型对螺旋泡状流,螺旋弥散流,螺旋环状流,螺旋分层流预测效果较好,预测误差不大于20%。
基金
Project(51574045)supported by the National Nature Science Foundation of China
作者简介
Corresponding author:王树立,PhD,Professor,Tel:+86-13813698610,E-mail:wsl@cczu.edu.cn,ORCID:0000-0003-3573-5034。
