2011, Volume 13, Issue 12
Strategic Study of CAE >> 2011, Volume 13, Issue 12
Three-dimensional numerical simulation of floodwater evolution with storm surge based on VOF method
1.State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;
2.Tianjin Municipal Water Conservancy Survey and Design Institute,Tianjin 300204, China
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Abstract
In order to enhance the ability of emergency response to storm surge disaster and ensure moistureproof safety, the 3D unsteady k-ε model coupled with the volume of fluid (VOF) method of water-air two-phase flow is established. The model adopts the method of equivalent roughness to deal with urban intensive building groups, in which the effect of water resistance and water storage are both taken into consideration. One hundred years frequency storm surge is analyzed based on the numerical simulation and analysis of floodwater evolution with storm tide between the Haihe River and the Yongdingxinhe River of the new coastal region of Tianjin. The severity of different frequencies of the storm surge are compared and analyzed. The results show that the flooded area and the water depth decrease with the increasing of storm surge frequency. The researches provide theoretical foundation and technical support for the safety management of the sea wall and scientific assessment of storm surge disaster.
Keywords
floodwater evolution with storm surge ; volume of fluid (VOF) method ; 3D k-ε model ; water depth distribution
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References
[ 1 ] 李鑫.渤海风暴潮增减水及流场时空特征初步研究[D].南京:南京水利科学研究院,2007. link1
[ 2 ] Haider S, Paquier A, Morel R, et al.Urban flood modeling using computational fluid dynamics [ J] .Water and Maritime Engineer- ing, 2003 , 156 : 129 -135. link1
[ 3 ] Inoue K, Kawaike K, Hayashi H.Numerical simulation models on inundation flow in urban area [ J ] .Journal of Hydroscience and Hydraulic Engineering, 2000 , 18 ( 1 ) :119 -126. link1
[ 4 ] Mignot E, Paquier A, Ishigaki T.Comparison of numerical and experimental simulations of a flood in a dense urban area [ J ] . Water Science and Technology, 2006 , 54 ( 6 -7 ) :65 -73. link1
[ 5 ] Soares S, Spinewine B, Duthoit A, et al. Dam-break flow ex- periments in simplified city layouts[ C] ∥7 th International Confer- ence on Hydro-informatics, Nice, France, 2006.
[ 6 ] 张大伟.堤坝溃决水流数学模型及其应用研究[D].北京:清华大学,2008. link1
[ 7 ] 姚志坚,陈文龙.溃坝洪水演进数学模型研究及其在大镜山水库在的应用[J].人民珠江,2008(3):7-9. link1
[ 8 ] 张大伟,程晓陶,黄金池.建筑物密集城区溃堤水流二维数值模拟[J].水利学报,2010,41(3):272-277. link1
[ 9 ] 黄金池,何晓燕.溃坝洪水的统一二维数学模型[J].水利学报,2007,37(2):222-226. link1
[10] Hirt C W, Nichols B D.Volume of fluid ( VOF) method for the dynamics of free boundaries[ J] .Journal of Computational Phys- ics, 1981 , 39 ( 1 ) : 201 -225. link1
[11] 王晓玲,段琦琦,佟大威,等.长距离无压引水隧洞水气两相流数值模拟[J].水利学报,2009,40(5):596-602. link1
[12] 张行南,张文婷,刘永志,等.风暴潮洪水淹没计算模型研究[J].系统仿真学报,2006,18(增刊2):20-23. link1
[13] 周晓泉.复杂边界条件下的三维紊流数值模拟研究[D].成都:四川大学,2003. link1
[14] Guido Testa, David Zuccalà, Francisco Alcrudo, et al.Flash flood flow experiment in a simplified urban district [ J] .Journal of Hydraulic Research, 2007 ,45 :37 -44. link1
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