排灌机械工程学报
   首页  学报介绍  编 委 会  作者园地  征订启事  编校法规  编读往来  录用公告  广告合作   行业新闻  留  言  English 
排灌机械工程学报  2011, Vol. 29 Issue (5): 386-391    DOI: 10.3969/j.issn.1674—8530.2011.05.004
泵理论与技术 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
吸水口上自由表面旋涡的LES-LBM模拟
张  睿, 陈红勋, 王小永
(上海大学上海市应用数学和力学研究所, 上海 200072)
Simulation of free surface vortex upon suction inlet based on LES-LBM
Zhang Rui, Chen Hongxun, Wang Xiaoyong
(Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China)
 全文: PDF (709 KB)   HTML (1 KB)   输出: BibTeX | EndNote (RIS)      背景资料
摘要  为了实现高雷诺数下自由表面旋涡生成与演化过程的数值模拟,将标准Smagorinsky亚格子应力模型引入到三维单相自由面格子Boltzmann方法中,建立结合大涡模拟的格子Boltzmann方法(LES-LBM).当进口雷诺数分别为5×104和105时,考虑重力和科氏力的作用,采用LES-LBM对长方形水槽底部吸水口上方的自由表面旋涡的生成与演化过程进行数值计算,再现了自由表面旋涡发展过程中的典型流态,并根据其特点将自由表面旋涡的发展过程分为4个典型阶段.对比分析有、无科氏力作用下的高雷诺数流动算例,验证科氏力的作用.对自由表面旋涡发展过程中的B型(染色旋涡和挟物旋涡)和D型(连续吸气旋涡)自由表面旋涡的径向速度、切向速度以及轴向速度沿吸水口半径方向的分布规律进行重点分析.数值计算结果表明:采用结合大涡模拟的单相自由面格子Boltzmann方法,可以有效模拟高雷诺数下的自由表面旋涡生成与演化过程;验证了科氏力在诱导并促进自由表面旋涡发展过程中的作用;计算获得的自由表面旋涡内部流场的各速度分量沿径向的分布规律与试验结果定性一致,且几乎不随进口雷诺数的不同而改变.
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
陈红勋
王小永
关键词自由表面旋涡   格子波尔兹曼方法   亚格子应力模型   科氏力   大涡模拟     
Abstract: To realize the numerical simulation of the formation and evolution process of the free surface vortex in high Reynolds number flow issues, the standard Smagorinsky subgrid stress model was  introduced  into the three dimensional of single phase free surface lattice Boltzmann method, and the LES-LBM was established. Considered that the inlet Reynolds number were 5×104 and 105,the  Formation and evolution process of the free surface vortex upon suction inlet of rectangular water tank under the effect of gravity and Coriolis force was simulated by LES-LBM. The main flow features of the free surface vortex were represented in the process. According to the flow characteristics, the developing process was divided into four typical stages. By comparing the high Reynolds number flow problems with and without Coriolis force, the action of it was tested. The regularities of the radial velocity, tangential velocity and axial velocity of the B-type(Dye core & Trash pulling core) and D-type(Full air core) free surface vortex along the direction of radial were mainly analyzed. The numerical simulation results show that the formation and evolution process of free surface vortex in high Reynolds number can be effectively simulated by LES-LBM. The effect of Coriolis force which promotes the free surface vortex production and development has been proved. The regularities of the velocity components of free surface vortex are qualitatively consistent with the experimental results and they barely change along with the variation of the inlet Reynolds number.
Key wordsfree surface vortex   lattice Boltzmann method   sub-grid stress model   Coriolis force   large eddy simulation   
收稿日期: 2011-03-03; 出版日期: 2011-09-30
基金资助:

国家自然科学基金资助项目( 10772108) ; 上海市重点学科建设项目( Y0103)

通讯作者: 张 睿( 1984-),男,山东济宁人,博士研究生( gulie1984@163.com),主要从事水力学、水力机械的数值模拟研究.   
作者简介: 陈红勋( 1962-),男,江苏镇江人,研究员,博士生导师( chenhx@ shu.edu.cn),主要从事水力学、水力机械流动机理研究
引用本文:   
张,睿,陈红勋等. 吸水口上自由表面旋涡的LES-LBM模拟[J]. 排灌机械工程学报, 2011, 29(5): 386-391.
ZHANG ,RUI ,CHEN Hong-Xun et al. Simulation of free surface vortex upon suction inlet based on LES-LBM[J]. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(5): 386-391.
 
[1] Li Haifeng,Chen Hongxun,Ma Zheng,et al. Experimental and numerical investigation of free surface vortex[J].Journal of Hydrodynamics, 2008,20(4): 485-491.
[2] Wang Yingkui,Jiang Chunbo. Investigation of the surface vortex in a spillway tunnel intake[J].Tsinghua Science and Technology,2010,15(5):561-565.
[3] Chen Yunliang,Wu Chao,Ye Mao,et al. Hydraulic characteristics of vertical vortex at hydraulic intakes[J].Journal of Hydrodynamics, 2007,19(2):143-149.
[4] 陈红勋,郭加宏,胡 雷,等.吸水口前自由表面旋涡的LBM模拟[J].水动力学研究与进展,2010,25(5):676-682.
Chen Hongxun,Guo Jiahong,Hu Lei,et al. LBM simulation of free surface vortex in front of suction inlet[J].Chinese Journal of Hydrodynamics,2010,25(5):676-682.(inChinese)
[5] Krner C,Thies M,Hofmann T,et al. Lattice Boltzmann model for free surface flow for modeling foaming[J].Journal of Statistical Physics, 2005,121(112):179-196.
[6] Xing Xiuqing,David Lee Butler,Yang Chun. A Lattice Boltzmann based single phase method for modeling surface tension and wetting[J].Computational Materials Science,2007,39(2):282-290.
[7] Aidun C K,Clausen J R. Lattice-Boltzmann method for complex flows[J].Annual Review of Fluid Mechanics,2010,42:439-472.
[8] Hou S,Sterling J,Chen S,et al. A lattice Boltzmann subgrid model for high Reynolds number flows[J].Fields Institute Communications,1996,6:151-166.
[9] Smagorinsky J. General circulation experiments with the primitive equations[J]. Monthly Weather Review,1963,91(3):99-164. 2.3.CO;2 target="_blank">
[10] Yu Huidan,Girimaji S S,Luo Lishi. DNS and LES of decaying isotropic turbulence with and without frame rotation using lattice Boltzmann method[J].Journal of Computational Physics,2005,209(2):599-616.
[11] 李海峰.自由表面旋涡的机理研究[D].上海:上海大学上海市应用数学和力学研究所,2009.
[12] Qian Y H,D′Humières D,Lallemand P. Lattice BGK models for NavierStokes equation[J].Europhysic Letters,1992,17(6): 479-484.
[13] Knauss J. Swirling Flow Problems at Intakes[M].Rotterdam, The Netherlands: A.A.Balkema,1987.
[14] Li Haifeng,Chen Hongxun,Ma Zheng,et al. Formation and influencing factors of free surface vortex in a barrel with a central orifice at bottom[J].Journal of Hydrodynamics,2009,21(2):238-244.
[1] 唐学林, 王武昌, 王福军, 黎耀军. 泵站前池水沙流的数值模拟[J]. 排灌机械工程学报, 2011, 29(5): 411-417.
[2] 王春林, 丁 剑, 史亚婷, 吕亚云, 李长军. 旋流自吸泵突台结构数值模拟及对性能的影响[J]. 排灌机械工程学报, 2010, 28(6): 474-478.
[3] 黄剑峰, 张立翔, 王文全, 姚 激. 基于大涡模拟的水轮机内瞬态湍流场特性分析[J]. 排灌机械工程学报, 2010, 28(6): 502-505.
[4] 袁建平, 付燕霞, 刘 阳, 张金凤, 裴 吉. 基于大涡模拟的离心泵蜗壳内压力脉动特性分析[J]. 排灌机械工程学报, 2010, 28(4): 310-314.
[5] 王春林, 吴志旺, 赵佰通, 刘红光, 易同祥. 轴流泵前置导轮内部流场的大涡模拟[J]. 排灌机械工程学报, 2009, 27(5): 302-305.
[6] 周凌九1 袁玲丽1. 射流泵液固两相特性三维大涡模拟研究[J]. 排灌机械工程学报, 0, (): 5-.

江苏大学梦溪校区(镇江市梦溪园巷30号)图书馆5楼 0511-84440893 传真0511--84440033
Copyright 江苏大学杂志社 2010-2015 All Rights Reserved