文献类型：期刊文献

英文题名：Research of vertical falling film behavior in scrubbing-cooling tube

作者：Yan, Liucheng[1];Wang, Yifei[1];Wu, Ziwei[1];Dai, Zhenghua[1];Yu, Guangsuo[1];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：117

起止页码：627

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20164903099057);WOS:【SCI-EXPANDED(收录号:WOS:000393535400056)】；

基金：This work is financially supported by the National High-Tech Research and Development Program of China (2012AA053101).

语种：英文

外文关键词：Falling film; Film velocity and thickness; Numerical simulation; Ultrasound Doppler Velocimetry

摘要：Experimental results of the thickness and velocity distribution of the vertical falling film of a gas-liquid two-phase flow in a scrubbing-cooling tube are reported. The liquid Reynolds numbers ranges from 1.0 x 10(4) to 3.1 x 10(4). A 3D numerical model of the scrubbing-cooling ring and tube has also been established. The simulation results agree well with the experimental data. The research shows that the average liquid film thickness is largest at the 0 circumferential position. A part of the liquid is separated from the local liquid film and drips in the gas core when Reynolds number >= 1.5 x 10(4). Circumferentially the liquid film thickness is distributed more evenly in the lower section of the tube. When the liquid Reynolds number increases, both of the global liquid film thickness and velocity increase, and the thickness distribution becomes unevener. The liquid film velocity increases with the increase of flow distance at small Reynolds number and decreases at large Reynolds number. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.