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龙卷风维持特性的探索

邸浩宇 徐晶磊 高歌

邸浩宇, 徐晶磊, 高歌等 . 龙卷风维持特性的探索[J]. 北京航空航天大学学报, 2018, 44(5): 1110-1116. doi: 10.13700/j.bh.1001-5965.2017.0387
引用本文: 邸浩宇, 徐晶磊, 高歌等 . 龙卷风维持特性的探索[J]. 北京航空航天大学学报, 2018, 44(5): 1110-1116. doi: 10.13700/j.bh.1001-5965.2017.0387
DI Haoyu, XU Jinglei, GAO Geet al. Exploration of tornado maintenance features[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(5): 1110-1116. doi: 10.13700/j.bh.1001-5965.2017.0387(in Chinese)
Citation: DI Haoyu, XU Jinglei, GAO Geet al. Exploration of tornado maintenance features[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(5): 1110-1116. doi: 10.13700/j.bh.1001-5965.2017.0387(in Chinese)

龙卷风维持特性的探索

doi: 10.13700/j.bh.1001-5965.2017.0387
基金项目: 

国防科技重点实验室基金 9140C410505150C41192

详细信息
    作者简介:

    邸浩宇  男, 硕士研究生。主要研究方向:CFD数值模拟、湍流模式理论

    徐晶磊  男, 博士, 讲师。主要研究方向:计算流体力学方法、湍流模式理论

    高歌  男, 博士, 教授。主要研究方向:发动机气动热力

    通讯作者:

    徐晶磊, E-mail: xujl@buaa.edu.cn

  • 中图分类号: O354.1;V211.1+4

Exploration of tornado maintenance features

Funds: 

National Defense Science and Technology Key Laboratory Foundation of China 9140C410505150C41192

More Information
  • 摘要:

    利用计算流体力学(CFD)方法建立了模拟龙卷风的装置模型。基于龙卷风在平面上的速度型,拟合成函数关系式,在三维CFD程序中设置初始速度场以及相关的边界条件,匹配不同的初始温度场进行了关于龙卷风维持和发展的一系列数值模拟。重现并利用漩涡管的Ranque-Hilsch效应以及汇流换热原理分析了本文2种不同的温度型对龙卷风内部流场变量随时间推移所发生的变化,同时揭示了龙卷风产生并维持下去的一种可能性,即冷热气流汇流换热生成温度场可能是产生和维持龙卷风的直接原因,并在此基础上提出使龙卷风削弱甚至消亡的方法,即破坏温度场。

     

  • 图 1  龙卷风数值模拟的网格划分

    Figure 1.  Mesh generation for numerical simulation of tornado

    图 2  初始速度场的速度分布

    Figure 2.  Velocity distribution of initial velocity field

    图 3  不同计算步数下的速度变化曲线(算例1)

    Figure 3.  Velocity variation curves under different calculation steps (Case 1)

    图 4  不同计算步数下的温度变化曲线(算例1)

    Figure 4.  Temperature variation curves under different calculation steps (Case 1)

    图 5  不同计算步数下的压力变化曲线(算例1)

    Figure 5.  Pressure variation curves under different calculation steps (Case 1)

    图 6  不同计算步数下的密度变化曲线(算例1)

    Figure 6.  Density variation curves under different calculation steps (Case 1)

    图 7  不同计算步数下的速度变化曲线(算例2)

    Figure 7.  Velocity variation curves under different calculation steps (Case 2)

    图 8  速度变化曲线对比

    Figure 8.  Comparison of velocity variation curve

    图 9  不同计算步数下的温度变化曲线(算例2)

    Figure 9.  Temperature variation curves under different calculation steps (Case 2)

    图 10  不同计算步数下的压力变化曲线(算例2)

    Figure 10.  Pressure variation curves under different calculation steps (Case 2)

    图 11  不同计算步数下的密度变化曲线(算例2)

    Figure 11.  Density variation curves under different calculation steps (Case 2)

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    WANG J, ZHOU Q, CAO S Y, et al.Physical study on tornado-like flow based on tornado vortex simulator[J].Journal of Tongji University(Natural Science), 2014, 42(11):1654-1659(in Chinese). http://kns.cnki.net/KCMS/detail/detail.aspx?filename=tjdz201411004&dbname=CJFD&dbcode=CJFQ
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出版历程
  • 收稿日期:  2017-06-07
  • 录用日期:  2017-10-13
  • 网络出版日期:  2018-05-20

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