| 预测水平管气-液环状流周向液膜厚度分布的理论模型 |
| |
| 引用本文： | 李卫东,LI Rongxian,李荣先,王跃社,周芳德.预测水平管气-液环状流周向液膜厚度分布的理论模型[J].化工学报,2001,52(3):204-208. |
| |
| 作者姓名： | 李卫东 LI Rongxian 李荣先 王跃社 周芳德 |
| |
| 作者单位： | 清华大学工程力学系; 西安交通大学动力工程多相流国家重点实验室 |
| |
| 摘 要： | 针对水平环状流液膜厚度沿周向分布的不对称性 ,用 5组双平行电导探针测量了水平管内气液环状流沿周向的瞬态液膜厚度 ,得到了平均液膜厚度沿周向的分布规律 .分析了液膜向上输送的机理 .为更为准确地预测液膜厚度 ,综合考虑了扰动波抽吸作用机理、气体二次流机理及液滴沉降和携带机理 ;通过量级比较和应力平衡的方法 ,提出了一个预测液膜厚度沿周向分布的理论模型 .数值模拟结果表明预测值与实验测量结果符合较好
|
| 关 键 词： | 气－液两相流 环状流 液膜厚度 水平管 理论模型 周向分布 液体物料输送 预测 |
| 文章编号： | 0438-1157(2001)03-0204-05 |
| 修稿时间： | 1999年10月8日 |
MODEL FOR PREDICTION OF CIRCUMFERENTIAL DISTRIBUTION OF FILM THICKNESS IN HORIZONTAL GAS-LIQUID ANNULAR FLOW |
| |
| LI Rongxian.MODEL FOR PREDICTION OF CIRCUMFERENTIAL DISTRIBUTION OF FILM THICKNESS IN HORIZONTAL GAS-LIQUID ANNULAR FLOW[J].Journal of Chemical Industry and Engineering(China),2001,52(3):204-208. |
| |
| Authors: | LI Rongxian |
| |
| Abstract: | For annular flow in a horizontal pipe, the gravity force resulted in an asymmetric distribution of the liquid film flowing along the pipe wall. Using five parallel-wire conductance probes, time records were collected on local liquid film thickness at five circumferential positions. The liquid upward transport mechanism is very important for predicting the circumferential liquid film thickness distribution in horizontal gas-liquid annular flow. Taking into consideration the pumping action of disturbance waves, the induced secondary flow in the gas flow, entrainment and deposition of droplets a theoretical model of circumferential distribution of liquid film thickness was developed with stress balance and order analysis method. The filmthickness distribution obtained from the model accorded with the experimental data very well. |
| |
| Keywords: | gas-liquid two-phase flow annular flow theoretical model liquid film |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
