工程科学学报2016，Vol.38Issue(8)：1091-1097,7.DOI:10.13374/j.issn2095-9389.2016.08.007
基于数值模拟的气液相界面积计算方法
Computation method of gas--liquid interfacial area based on numerical simulation results
摘要
Abstract
The gas-liquid interfacial area has significant influence on kinetic processes, such as heat transfer, mass transfer and physiochemical reactions in two-phase flow. A new method for getting this parameter is introduced to compute the interfacial area with the numerical simulation results of two-phase flow. Referring to the idea of a piecewise linear interface calculation ( PLIC) method, it uses a plane in each cell to approximate the real curved interface between two phases, these planes are then categorized into five types according to the volume fractions of the target fluid and their gradient vectors in each cell, and the interfacial areas are respectively calculated by different equations for different plane types. This method is applied in analyzing the numerical simulation results of a copper converter. It is shown that this method can extract the interfacial area of any spatial region effectively in a two-phase flow system and can be used in analyzing the features of kinetic processes quantitatively in a two-phase dispersion system. Moreover, by using the computed interfacial area, the oxygen utilization ratio is calculated and the “highly efficient reaction zone” in the bath is recognized. The results agree with practical data and experience, indicating the accuracy of the proposed method in some extent.关键词
两相流/界面/面积/数值模拟/计算流体力学Key words
two-phase flow/interfaces/area/numerical simulation/computational fluid dynamics分类
矿业与冶金引用本文复制引用
宋彦坡,刘志高,陶焰明,彭小奇,陈卓..基于数值模拟的气液相界面积计算方法[J].工程科学学报,2016,38(8):1091-1097,7.基金项目
国家自然科学基金资助项目(61105080,61273159,61134006) （61105080,61273159,61134006）
湖南省科技重大专项资助项目(2013FJ1009) （2013FJ1009）
湖南省自然科学基金资助项目(11JJ4057) （11JJ4057）
安徽省科技厅重大科技专项(1301021018) （1301021018）
