管内蒸汽直接接触凝结压力振荡特性研究  

Investigation on pressure oscillation characteristics of steam direct contact condensation in the pipe

作　　者：李甜甜 李树谦 刘联胜[1] 卢涛[4] LI Tiantian;LI Shuqian;LIU Liansheng;LU Tao(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 30040l,China;School of Civil Engineering,Hebei University of Water Resources and Electric Engineering,Cangzhou 061001,China;Hebei Technology Innovation Center of Phase Change Thermal Management of Internet Data Center,Cangzhou 0610013,China;College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]河北工业大学能源与环境工程学院,天津300401 [2]河北水利电力学院土木工程系,河北沧州061001 [3]河北省数据中心相变热管理技术创新中心,河北沧州061001 [4]北京化工大学机电工程学院,北京100029

出　　处：《热科学与技术》2025年第1期12-19,共8页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51976052);河北省自然科学基金资助项目(E2020412176);河北省高等学校科学技术研究重点资助项目(ZD2019032)。

摘　　要：该文针对蒸汽垂直注入水平管内流动过冷水时的蒸汽直接接触凝结现象进行了实验研究,探讨并分析了蒸汽质量流率、过冷水雷诺数等参数对气液相界面动态特性和压力波动特性的影响规律,进一步阐明了蒸汽质量流率对压力脉冲平均幅值和概率密度函数分布特性的影响特性。实验结果表明:在较低蒸汽质量流率下,会发生周期性的间歇凝结现象,并引发气液相界面的形态出现周期性的剧烈波动。在60 kg/(m^(2)·s)的临界蒸汽质量流率附近,凝结形态发生转变时,压力振荡波的平均幅值出现下降的趋势。概率密度分布函数和累积积分函数曲线分别与压力波动的类型高度相关,随着蒸汽质量流率的增加,凝结引起的压力振荡类型由脉冲振荡逐渐转变为连续振荡。An experimental study was conducted when steam was injected vertically into the flowing water in a horizontal pipe.The influences of the steam mass fluxes,subcooled water temperature and Reynolds numbers on the dynamic characteristics of gas-liquid interface and pressure oscillation were discussed and analyzed.The influences of steam mass flux on the amplitude of pressure pulse and the probability density function were further elucidated.The results showed that the periodic chugging condensation would occur at the lower mass flux,which induced the morphology of the steam-water interface periodically fluctuated violently.At the critical mass flux of 60 kg/(m^(2).s),the average amplitude of pressure oscillation decreased when the flow pattern changes.The curves of the PDF and CPDF were highly associated with the types of pressure oscillation.When the water Reynolds number was constant,the type of the pressure oscillation caused by the condensation changed from pulse oscillation to continuous oscillation as the steam mass flux increased.

关 键 词：直接接触凝结 界面形状 压力波平均幅值 概率密度分布函数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]