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流型判别是气液两相流研究的重要内容。应用适用于工业设计中大管径、高压力管道的多相流瞬态模拟软件OLGA,以空气-水为介质,对倾角为-70°～90°、内径为200mm、压力为2.0MPa的气液两相管流进行数值模拟,通过变换不同的气液相流量和管道倾角,研究管道内气液两相流体流型的变化。根据数值模拟所得到的1628组数据,结合流体物性和管道倾角,回归建立了不同流型转变的判别准则经验相关式,为现场大管径、高压力气液两相流管道的流型判别提供了参考依据。
Flow pattern discrimination is an important part of gas-liquid two-phase flow research. Applications Multiphase flow transient simulation software OLGA, suitable for large diameter and high pressure pipelines in industrial design, uses air-water as the medium, gas with angle of -70 ° ~ 90 °, internal diameter of 200mm and pressure of 2.0MPa Liquid two-phase pipe flow numerical simulation, by changing the different gas-liquid phase flow and pipe inclination angle, the gas-liquid two-phase flow pattern changes in the pipeline. Based on the 1628 data obtained from the numerical simulation, empirical correlations of discriminant criteria for different flow regime transitions are established by regression of fluid properties and pipeline inclination, providing a basis for the flow pattern identification of large diameter and high pressure gas-liquid two-phase flow in the field Reference.