无内热源有序饱和多孔介质通道内气液两相流阻力特性研究

摘要

The resistance characteristics of steam-water two-phase flow in non-heat-generating porous media were experimentally studied and 158 sets of data were achieved.The particles-steam drag,particles-water drag and the steam-water interfacial drag were analyzed and the corresponding semi-theoretical models were established.The correlations of the void fraction and the interface force were also concluded.The experi-mental results were analyzed synthetically to study hydraulic and porous media geomet-rical parameters influence on the resistance characteristics of two-phase flow and a corre-lation was concluded to predict the flow resistance.The comparison between different correlations and experimental results indicates that the correlation achieved in this paper is the best one to predict the flow resistance of steam-water two-phase flow through the porous media.The results of this study provide experimental and theoretical basis for further research on the resistance and heat transfer characteristics of steam-water two-phase flow in porous media with internal heat source.%对无内热源有序饱和多孔介质内蒸汽-水两相流阻力特性进行了实验研究,在多孔介质通道内蒸汽-水两相受力分析的基础上,结合实验数据,得到了多孔介质内空泡份额及气液两相相间作用关系式,通过分析热工水力特征参数和多孔介质几何特征参数对两相流阻力特性的影响,得到了多孔介质内蒸汽-水两相流阻力关系式.结果表明,本文提出的两相流阻力关系式计算结果与实验结果符合良好,且优于其他关系式.本研究结果为进一步开展含内热源多孔介质内气液两相流阻力及传热特性研究提供了实验技术及理论依据.