EI、Scopus 收录
中文核心期刊

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

透水床面明渠湍流时空平均特征的大涡模拟与分析

韩旭 何国建 方红卫 符松

韩旭, 何国建, 方红卫, 符松. 透水床面明渠湍流时空平均特征的大涡模拟与分析[J]. 力学学报, 2015, 47(5): 713-721. doi: 10.6052/0459-1879-14-382
引用本文: 韩旭, 何国建, 方红卫, 符松. 透水床面明渠湍流时空平均特征的大涡模拟与分析[J]. 力学学报, 2015, 47(5): 713-721. doi: 10.6052/0459-1879-14-382
Han Xu, He Guojian, Fang Hongwei, Fu Songy. LARGE-EDDY SIMULATION AND DOUBLE-AVERAGING ANALYSIS OF OPEN-CHANNEL FLOW OVER A PERMEABLE BED[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 713-721. doi: 10.6052/0459-1879-14-382
Citation: Han Xu, He Guojian, Fang Hongwei, Fu Songy. LARGE-EDDY SIMULATION AND DOUBLE-AVERAGING ANALYSIS OF OPEN-CHANNEL FLOW OVER A PERMEABLE BED[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(5): 713-721. doi: 10.6052/0459-1879-14-382

透水床面明渠湍流时空平均特征的大涡模拟与分析

doi: 10.6052/0459-1879-14-382
基金项目: 国家自然科学基金资助项目(11372161)和水沙科学与水利水电工程国家重点实验室科研课题(2014-KY-02)资助项目.
详细信息
    通讯作者:

    何国建,高级工程师,主要研究方向:计算水力学,水环境数值模拟.E-mail:heguojian@tsinghua.edu.cn

  • 中图分类号: TV131.2

LARGE-EDDY SIMULATION AND DOUBLE-AVERAGING ANALYSIS OF OPEN-CHANNEL FLOW OVER A PERMEABLE BED

Funds: The project was supported by the National Natural Science Foundation of China (11372161) and the State Key Laboratory of Hydro-Science and Engineering, MOST, China (2014-KY-02).
  • 摘要: 基于大涡模拟数据,研究了理想粗糙透水床面明渠湍流的时空平均特性. 考虑到空间异构性,对比分析了不同位置的时空平均流速、雷诺剪应力、构造剪应力、脉动幅度的垂线分布. 结果表明:第一,顶层床面之上,空间异构性的影响较小,不同位置的双平均流速符合类似的对数分布,但由于透水床面影响,卡门常数较不透水床面小;在床面附近,空间异构性影响较大,不同位置的双平均流速分别符合线性分布与多项式分布;在透水河床内部,靠近底层球孔的双平均流速为上部球孔双平均流速的1.55 倍. 第二,床面之上,雷诺剪应力占总剪应力的95% 以上,占有主体地位;床面附近,紊动较大,构造剪应力不能忽略,其值大约占总剪应力的15%.由于流场的各向异性,纵向与垂向的脉动幅度有所差异.

     

  • Smith JD, Mclean SR. Spatially averaged flow over a wavy surface. Journal of Geophysical Research-Oceans and Atmospheres, 1977, 82(12): 1735-1746  
    Nikora V, Koll K, Mcewan I, et al. Velocity distribution in the roughness layer of rough-bed flows. Journal of Hydraulic Engineering-ASCE, 2004, 130(10): 1036-1042  
    Coleman SE, Nikora VI, Mclean SR, et al. Subelement form-drag parameterization in rough-bed flows. Journal of Hydraulic Engineering-ASCE, 2007, 133(2): 121-129  
    Aberle J. Measurements of armour layer roughness geometry function and porosity. Acta Geophysica, 2007, 55(1): 23-32
    Dey S, Das R. Gravel-Bed hydrodynamics: Double-averaging approach. Journal of Hydraulic Engineering-ASCE, 2012, 138(8): 707-725  
    Mignot E, Hurther D, Barthelemy E. On the structure of shear stress and turbulent kinetic energy flux across the roughness layer of a gravel-bed channel flow. Journal of Fluid Mechanics, 2009, 638: 423-452  
    Jimenez J. Turbulent flows over rough walls. Annual Review of Fluid Mechanics, 2004, 36: 173-196  
    白静,方红卫,何国建. 非淹没丁坝绕流的三维大涡模拟研究. 力学学报, 2013, 45(2): 151-157 (Bai Jing, Fang Hongwei, He Guojian. Study of non-submerged groin turbulence flowin a shallowopen channel by LES. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(2): 151-157 (in Chinese))
    Nikora VI, Smart GM. Turbulence characteristics of New Zealand gravel-bed rivers. Journal of Hydraulic Engineering-ASCE, 1997, 123(9): 764-773  
    Kironoto BA, Graf WH. Turbulence characteristics in rough uniform open-channel flow. Proceedings of the Institution of Civil Engineers-Water Maritime and Energy, 1994, 106(4): 333-344  
    Nikora VI, Rowinski PM. Rough-bed flows in geophysical, environmental, and engineering systems: Double-averaging approach and its applications - preface. Acta Geophysica, 2008, 56(3): 529-533
    Gimenez-Curto LA, Corniero MA. Flow characteristics in the interfacial shear layer between a fluid and a granular bed. Journal of Geophysical Research-Oceans, 2002, 107(C5): 12-1-12-9
    Nikora V, Mcewan I, Mclean S, et al. Double-Averaging concept for rough-bed open-channel and overland flows: Theoretical background. Journal of Hydraulic Engineering-ASCE, 2007, 133(8): 873-883  
    Manes C, Pokrajac D, Mcewan I. Double-averaged open-channel flows with small relative submergence. Journal of Hydraulic Engineering-ASCE, 2007, 133(8): 896-904  
    Nikora V, Goring D, Mcewan I, et al. Spatially averaged open-channel flow over rough bed. Journal of Hydraulic Engineering-ASCE, 2001, 127(2): 123-133  
    Germano M, Piomelli U, Moin P, et al. A dynamic subgrid-scale eddy viscosity model. Physics of Fluids A-Fluid Dynamics, 1991, 3(7): 1760-1765  
    Bomminayuni S, Stoesser T. Turbulence statistics in an open-channel flow over a rough bed. Journal of Hydraulic Engineering-ASCE, 2011, 137(11): 1347-1358  
    Dasgupta A, Paudyal GN. Characteristics of free-surface flow over gravel bed. Journal of Irrigation and Drainage Engineering-ASCE, 1985, 111(4): 299-318  
    陈兴伟,林木生,程年生等. 粗糙透水床面明渠水流的垂线流速分布. 水科学进展, 2013, 24(6): 849-854 (Chen Xingwei, Lin Musheng1, Cheng Niansheng, et al. Velocity profile of turbulent open-channel flows over rough and permeable beds. Advances in Water Science, 2013, 24(6): 849-854 (in Chinese))
    Nezu I, Kadota A, Nakagawa H. Turbulent structure in unsteady depth-varying open-channel flows. Journal of Hydraulic Engineering-ASCE, 1997, 123(9): 752-763  
    Manes C, Pokrajac D, Nikora VI, et al. Turbulent friction in flows over permeable walls. Geophysical Research Letters, 2011, 38: L03402
    Manes C, Pokrajac D, Mcewan I, et al. Turbulence structure of open channel flows over permeable and impermeable beds: A comparative study. Physics of Fluids, 2009, 21: 12510912
    Nezu I, Nakagawa H. Turbulence in Open-Channel Flows. Balkema, Rotterdam, Netherlands. 1993
  • 加载中
计量
  • 文章访问数:  1351
  • HTML全文浏览量:  59
  • PDF下载量:  996
  • 被引次数: 0
出版历程
  • 收稿日期:  2014-12-01
  • 修回日期:  2015-07-08
  • 刊出日期:  2015-09-18

目录

    /

    返回文章
    返回