水力段塞的压力基数值模拟算法研究  

Study on Pressure-based Numerical Simulation Algorithm of Hydraulic Slug

作　　者：石国赟 宫敬[3] SHI Guoyun;GONG Jing(School of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;Beijing Academy of Safety Engineering and Technology,Beijing 102617,China;China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]北京石油化工学院机械工程学院,北京102617 [2]北京市安全生产工程技术研究院,北京102617 [3]中国石油大学(北京)机械与储运工程学院,北京102249

出　　处：《工程热物理学报》2024年第9期2702-2706,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51874323,No.51534007)。

摘　　要：本文提出了一种压力基算法来模拟水力段塞的初始化与发展过程。该算法首先结合双流体模型与合适的封闭关系,构建了适用于水力段塞的数理模型。其次,为解决段塞头不含气导致方程组奇异问题,提出了能够同时处理段塞体与液膜区的单相–两相耦合的压力基求解算法。结果表明,该算法能够自动初始化水力段塞,模拟分层流向水力段塞流的转换过程,并与常见流型转换图吻合,同时段塞频率、长度具有随机性,其统计量与经验关系式吻合。A pressure-based algorithm is proposed to simulate the initialization and development process of hydraulic slug.Firstly,the algorithm combines the two-fluid model and the appropriate closed relationship to construct a mathematical model suitable for hydraulic slugs.Secondly,in order to solve the singular problem of the equations caused by the absence of gas in the slug head,a pressure-based solution algorithm that can simultaneously deal with the coupling of the singlephase and two-phase between the slug body and the liquid film region is proposed.The results show that the algorithm can automatically initialize the hydraulic slug and simulate the conversion process of stratified flow to hydraulic slug flow,which is consistent with the common flow pattern conversion diagram.At the same time,the slug frequency and length are random,and the statistics are consistent with the empirical relationship.

关 键 词：双流体模型 水力段塞 压力基算法 数值模拟 

分 类 号：TK123[动力工程及工程热物理—工程热物理]