| 蒸汽直接加热冷水的汽液界面压力振荡特性仿真研究 |
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| 引用本文： | 李树谦,卢涛,韩雯雯,高俊明,高桂芝,侯娜娜.蒸汽直接加热冷水的汽液界面压力振荡特性仿真研究[J].热科学与技术,2020,19(1):7-13. |
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| 作者姓名： | 李树谦 卢涛 韩雯雯 高俊明 高桂芝 侯娜娜 |
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| 作者单位： | 河北水利电力学院土木工程学院,河北沧州061001;北京化工大学机电工程学院,北京100029;青岛科技大学机电工程学院,山东青岛266061 |
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| 基金项目： | 国家自然科学基金资助项目(No. 51476007)沧州市自然科学基金资助项目(No. 187000001) |
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| 摘 要： | 为探究蒸汽直接加热冷水过程中汽液界面瞬态压力振荡及两相流动特性,选用基于热平衡原理的凝结模型、大涡模拟湍流模型和流体体积分数多相流模型,对管道内蒸汽直接加热冷水过程进行了数值模拟,并将数值模拟获取的压力振荡与实验值进行了对比分析。结果表明,数值模拟获取的压力振荡时域特征与实验测量值吻合较好,汽液界面呈现显著的瞬态压力梯度波动,界面压力波动导致附近冷水流场结构发生瞬态剧烈变化。
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| 关 键 词： | 蒸汽 直接加热 冷水 压力波动 |
| 收稿时间： | 2019/4/8 0:00:00 |
| 修稿时间： | 2019/7/30 0:00:00 |
Characteristics and mechanism of pressure oscillation at steam-water interface during the process of steam direct heating the cold water |
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| Li Shuqian,Lu Tao,Han Wenwen,Gao Junming,Gao Guizhi and Hou Nana.Characteristics and mechanism of pressure oscillation at steam-water interface during the process of steam direct heating the cold water[J].Journal of Thermal Science and Technology,2020,19(1):7-13. |
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| Authors: | Li Shuqian Lu Tao Han Wenwen Gao Junming Gao Guizhi and Hou Nana |
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| Affiliation: | School of Civil Engineering,Hebei University of Water Resources and Electric,Cangzhou Hebei,School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,College of Electromechanical Engineering,Qingdao University of Science Technology,Qingdao Shandong,School of Civil Engineering,Hebei University of Water Resources and Electric,Cangzhou Hebei,School of Civil Engineering,Hebei University of Water Resources and Electric,Cangzhou Hebei,School of Civil Engineering,Hebei University of Water Resources and Electric,Cangzhou Hebei |
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| Abstract: | In order to explore the transient pressure oscillations at steam-water interface and two-phase flow characteristics, water directly heated by steam in a pipe has been simulated using the Large Eddy Simulation (LES) turbulence model and Volume of Fluid (VOF) multiphase flow model, furthermore, the simulation results of pressure oscillations and the experimental data are compared and analyzed. The results show that the time-domain characteristics of pressure oscillation obtained by numerical simulation are in good agreement with the measured values. Additionally, the steam-water interface shows significant transient pressure gradient fluctuations, which causes transient and drastic changes in the structure of nearby cold water flow field. |
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| Keywords: | steam direct heating cold water pressure oscillation |
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