单一贴壁四面体框架绕流场三维数值模拟

高柱; 殷杰; 唐洪武; 郭红民

单一贴壁四面体框架绕流场三维数值模拟

1.
三峡大学水利与环境学院, 湖北, 宜昌, 443002;
2.
上海勘测设计研究院, 上海, 200434;
3.
河海大学水利水电工程学院, 江苏, 南京, 210098

基金项目: 水文水资源与水利工程科学国家重点实验室开放研究基金(2009491111);浙江省科技攻关计划重点科研项目(2008C23104);三峡大学科学基金资助项目(0620070016,0620080019);国家自然科学基金资助项目(50779028)

详细信息

作者简介:
高柱(1978- ),男,湖北宜昌人,讲师,博士,主要从事水力学及河流动力学、环境水力学等方面研究.E-mail:gaozhu.cn@gmail.com

中图分类号: TV143.3;TV653.6
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出版历程
- 收稿日期: 2009-03-15
- 刊出日期: 2010-03-24

Three dimensional numerical simulation of external flow field around tetrahedron frame with a single attached wall

1.
College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China;
2.
Shanghai Investigation, Design & Research Institute, Shanghai 200434, China;
3.
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China

Funds: The study is financially supported by the Open Foundation of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (2009491111) and the National Natural Science Foundation of China (No.50779028)

摘要

摘要: 四面体透水框架群作为一种新型的防冲促淤措施已经在各种河流工程中得到推广应用,由于其特殊的几何形状,仅依靠常见的量测手段确定其绕流场结构存在较大困难,使得对该类方法防护机理的理解受到限制。在CFD通用程序Fluent平台上建立三维水动力数值模型,对单一贴壁四面体透水框架的清水流场进行模拟,并与超声测速仪(ADV)实测结果进行对比验证。研究表明该数值模型有效地补充了三维复杂流场的物理实验结果,有助于理解四面体框架的防护机理。改变水力参数,计算得到阻力系数C_D相对于雷诺数Re的变化曲线,当Re>10⁵时,单一贴壁四面体框架的阻力系数C_D为一常数值,大小为1.557。
- 四面体框架 /
- 绕流场 /
- 数值模拟 /
- 阻力 /
- 冲刷防护
Abstract: The Tetrahedron Frame Groups (TFG) protection method,a new engineering measure to prevent bank erosion and promote sediment deposition,has been widely adopted in many river engineering practices in China.However,due to the unique geometric forms of TFG,it is difficult to measure the external flow in TFG,which limit further understanding about the mechanism of the TFG protection method.A three dimensional (3-D) hydrodynamic model is developed on the platform of the Computational Fluid Dynamics (CFD) platform fluent to simulate the external flow field and drag around the Tetrahedron Frame (TF) with a single attached wall in clear water environment.The simulation results are compared with the Acoustic Doppler Velocimetry (ADV) experimental measurements.The result shows that the 3-D model can effectively supplement the experimental study of the complex flow fields,which provides valuable information for the mechanism study of the TFG protection method.Giving different values of hydraulic parameters,the diagram of drag coefficient CD vs Reynolds number Re is obtained using the 3-D model.The diagram shows that the drag coefficient in TF with a single attached wall tends to be a constant value of.1.557 when the Reynolds number is larger than 10⁵.
- tetrahedron frame /
- external flow /
- numerical simulation /
- drag /
- scour protection

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参考文献(14)

[1]	徐国宾.黄河下游河道渠化治理[J].泥沙研究,2007(1):1-7.(XU Guo-bin.Canalized regulation of the lower Yellow River[J].Journal of Sediment Research,2007(1):1-7.(in Chinese))
[2]	徐国宾,张耀哲.混凝土四面六边透水框架群技术在河道整治、护岸及抢险中的应用[J].天津大学学报,2006,39(12):1465-1469.(XU Guo-bin,ZHANG Yao-zhe.Application of tetrahedron-like concrete penetrating frames in river improvement,bank protection and emergency work[J].Journal of Tianjin University,2006,39(12):1465-1469.(in Chinese))
[3]	房世龙,陈红,王岗.桥墩局部冲刷防护工程特性研究综述[J].水利水电科技进展,2007,27 (4):84-89.(FANG Shi-long,CHEN Hong,WANG Gang.Properties of protection engineering against local scouring around piers[J].Advances in Science and Technology of Water Resources,2007,27(4):84-89.(in Chinese))
[4]	房世龙,唐洪武,周宜林,等.桥墩附近四面体透水框架抛投防冲效果试验研究[J].水科学进展,2006,17(3):354-358.(FANG Shi-long,TANG Hong-wu,ZHOU Yi-lin,et al.Experimental study on effect of local scour at piers and protection by tetrahedron frame[J].Advances in Water Science,2006,17(3):354-358.(in Chinese))
[5]	陈辉,吴杰,李益进,等.四面六边透水框架体抛投落距探讨[J].河海大学学报:自然科学版,2009,37 (4):446-449.(CHEN Hui,WU Jie,LI Yi-jin,et al.Throwing distance of permeable frames of tetrahedron with six side[J].Journal of Hohai University:Natural Sciences,2009,37 (4):446-449.(in Chinese))
[6]	李若华,王少东,曾甄.穿越四面六边透水框架群的水流阻力特性试验研究[J].中国农村水利水电,2005(10):64-66.(LI Ruo-hua,WANG Shao-dong,ZENG Zhen.Experimental study on the resistance characteristic of water flow through the permeable frames of tetrahedron with six sides[J].China Rural Water and Hydropower,2005(10):64-66.(in Chinese))
[7]	徐锡荣,刘刚,徐松年,等.透水框架四面体防洪护岸试验研究[J].水利水电科技进展,2007,27 (5):65-68.(XU Xi-rong,LIU Gang,XU Song-nian,et al.Experimental study on flood control and bank protection by tetrahedron permeable frame[J].Advances in Science and Technology of Water Resource,2007,27 (5):65-68.(in Chinese))
[8]	蒋成义,吴春笃,黄卫东,等.辐流式二沉池中异重流的计算流体力学模型研究[J].水科学进展,2007,18(6):846-852.(JIANG Cheng-yi,WU Chun-du,HUANG Wei-dong,et al.Computational fluid dynamic model for density currents in activated sludge secondary clarifier[J].Advances in Water Science,2007,18(6):846-852.(in Chinese))
[9]	焦爱萍,刘沛清,刘宪亮.基于计算流体动力学的不同流量比两股射流水垫塘的消能特性研究[J].水科学进展,2008,19(2):238-244.(JIAO Ai-ping,LIU Pei-qing,LIU Xian-liang.Study on energy dissipation of two-jet with varying discharge ratio on a plunge pool based on computational fluid dynamics[J].Advances in Water Science,2008,19(2):238-244.(in Chinese))
[10]	李艳玲,华国春,张建民,等.多股水平淹没射流水力特性的影响因素研究[J].水科学进展,2006,17(6):761-766.(LI Yan-ling,HUA Guo-chun,ZHANG Jian-min,et al.Factors affecting the hydraulic characteristics of horizontal submerged jets[J].Advances in Water Science,2006,17(6):761-766.(in Chinese))
[11]	Fluent Inc.FLUENT 6.2 User's Guide[CP].Fluent Inc,2005.
[12]	GAO Zhu,TANG Hong-wu,XIAO Yang,et al.Hydraulics of tetrahedron-like penetrating frame[C]//Proceedings of the Ninth International Symposium on River Sedimentation.Beijing:Tsinghua University Press,2004:1827-1832.
[13]	吴持恭.水力学[M].第4版.北京:高等教育出版社,2007.(WU Chi-gong.Hydraulics[M].4th Edition.Beijing:Higher Education Press,2007.(in Chinese))
[14]	JOHN A R,CLAYTON T C.Engineering fluid mechanics[M].Hoboken:John Wiley & Sons,Inc,1993.

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文章访问数: 256
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单一贴壁四面体框架绕流场三维数值模拟

作者简介: 高柱(1978- ),男,湖北宜昌人,讲师,博士,主要从事水力学及河流动力学、环境水力学等方面研究.E-mail:gaozhu.cn@gmail.com

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出版历程

Three dimensional numerical simulation of external flow field around tetrahedron frame with a single attached wall

计量

出版历程

目录

作者简介:
高柱(1978- ),男,湖北宜昌人,讲师,博士,主要从事水力学及河流动力学、环境水力学等方面研究.E-mail:gaozhu.cn@gmail.com