摘要
液膜厚度是认识环状流典型特征的重要参数之一,对其准确预测对揭示环状流场中液膜-液滴转化规律、传热传质规律,以及压降规律的计算均具有重要意义。现有液膜厚度预测方法以经验公式为主,通过实验数据拟合得到,其适用条件有限。文章收集了更宽泛的液体种类、液流速、气流速、实验压力、管径的实验数据共801组,在其基础之上建立了垂直管环状流液膜厚度预测新模型,该模型是对经验模型所建关系式形式的发展。新模型考虑了气流速、液流速、压力、气体密度、气体黏度和管径的影响。新模型与现有11个模型相比,准确性更高,适用的参数范围更宽。
Liquid film thickness is one of the important parameters for understanding the typical characteristics of annular flow.Accurately predicting it is of great significance for revealing the conversion law of liquid film droplets,heat and mass transfer law,and pressure drop law calculation in annular flow fields.The existing methods for predicting liquid film thickness mainly rely on empirical formulas,which are obtained through experimental data fitting,but their applicability is limited.This chapter collected a total of 801 sets of experimental data on a wider range of liquid types,liquid flow rates,airflow rates,experimental pressures,and pipe diameters.Based on this,a new model for predicting droplet entrainment rate in annular flow was established,which is a development of the relationship form established by experience model.The new model considers the effects of gas velocity,liquid velocity,pressure,gas density,gas viscosity,and pipe diameter.Compared with the existing 11 models,the new model has higher accuracy and a wider range of applicable parameters.
作者
詹婷婷
王兴
王亚辉
姚鑫
石海涵
ZHAN Tingting;WANG Xing;WANG Yahui;YAO Xin;SHI Haihan(Oil Production Technology Research Institute of Jidong Oilfield Company,Tangshan 063004,China;Exploration and Development Research Institute of Zhongyuan Oilfield Company,Puyang 457000,China;School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China)
出处
《化工管理》
2025年第1期97-104,共8页
Chemical Management
关键词
环状流
液膜厚度
压降梯度
经验模型
circular flow
liquid film thickness
pressure drop gradient
empirical model
