排水箱涵气水两相流数值模拟

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英文篇名：Numerical Simulation of Open Channel Flow in Sewer Culvert 作者：谢红 ; 孙潭 ; 李树平 ; 毛青 英文作者：XIE Hong;SUN Tan;LI Shu-ping;MAO Qing;College of Environmental Science and Engineering,Tongji University; 关键词：排水箱涵 ; 腐蚀机理 ; 计算流体动力学 ; 气水两相流 英文关键词：sewer culvert;;corrosion mechanism;;computational fluid dynamics;;open channel flow 中文刊名：中国给水排水 英文刊名：China Water & Wastewater 机构：同济大学环境科学与工程学院; 出版日期：2019-08-01 出版单位：中国给水排水 年：2019 期：15 基金：上海市科委社会领域科研项目(16DZ1200500) 语种：中文; 页：90-93 页数：4 CN：12-1073/TU ISSN：1000-4602 分类号：TU992

摘要

为降低排水箱涵腐蚀速率,预防特大排水箱涵因腐蚀造成的安全隐患,亟需研究排水箱涵腐蚀机理及规律。结合流体动力学数值模拟技术,利用流体体积模型模拟带有浅水波的气水两相流。设置气、液、箱涵壁面边界条件,模拟排水箱涵气水两相流,观察自由液面浅水波,分析气相和液相流场特征及气相涡流分布。结果表明,排水箱涵流体动力学数值模拟结果与实测数据、箱涵腐蚀理论一致。排水箱涵流体动力学数值模拟技术可为降低排水箱涵腐蚀速率提供数据支持。
        To reduce the risks to the drainage system,it is urgent to study the corrosion mechanism of sewer culvert. In combination with computational fluid dynamics (CFD) numerical simulation technology,the volume of fluid (VOF) method was used to simulate an open channel flow with shallow water waves. The experiment set the boundary conditions of gas,liquid,and box culvert walls,simulated the gas-water two-phase flow in the sewer culvert,observed the shallow water waves at the free liquid surface,and analyzed the characteristics of gas and liquid flow fields as well as the distribution of gas vortices. It showed that the CFD simulation results were in consistent with the experimental data and the corrosion mechanism of sewer culvert. Therefore,the CFD simulation of the sewer culvert could provide simulated data for reducing the corrosion rate of sewer culvert.

引文

[1]冯静安，唐小琦，王卫兵，等．基于网格无关性与时间独立性的数值模拟可靠性的验证方法[J]．石河子大学学报:自然科学版，2017,35(1):52-56.Feng Jing’an,Tang Xiaoqi,Wang Weibing,et al.Reliability verification method of numerical simulation based on grid independence and time independence[J].Journal of Shihezi University:Natural Science,2017,35(1):52-56(in Chinese)．
    [2]Roussinova V,Biswas N,Balachandar R.Revisiting turbulence in smooth uniform open channel flow[J].J Hydra Res,2008,46(s1):36-48.