3种湍流模型模拟水下重力流的比较研究(英文)

被引:1
作者
王春凌
黄河清
周扬屏
郭丽娜
机构
[1] 安徽工业大学建筑工程学院环境流体研究所
关键词
重力流; 湍流模型; 数值计算; 长度尺度;
D O I
暂无
中图分类号
O357.5 [湍流(紊流)];
学科分类号
080103 ; 080704 ;
摘要
运用最新文献记载的3种用于数值模拟水下重力流的湍流模型模拟同一组新的水下重力流的实验。实验数据不仅包括传统的各垂向剖面的速度、浓度,也含有对应剖面的湍流动能。结果表明:在所比较的3湍流模型当中,k-ε模型的模拟性能最好,而MY和k-l模型的模拟均在重力流的上部混合区域呈现过量的扩散。进一步分析表明,MY模型和k-l模型所采用的依据墙面距离定义的宏观长度尺度L尽管可适用于水下重力流底部的壁面边界层,但不适用于重力流上部的自由剪切层,因为重力流上部自由剪切层的湍流长度尺度和依据壁面距离定义的宏观长度尺寸完全不同。
引用
收藏
页码:225 / 233
页数:9
相关论文
共 9 条
[1]   Influence of River Sinuosity on the Distribution of Conservative Pollutants [J].
Huang, Heqing ;
Chen, Guang ;
Zhang, Qian Feng .
JOURNAL OF HYDROLOGIC ENGINEERING, 2012, 17 (12) :1296-1301
[2]  
A comparison of the shear stress distribution in the bottom boundary layer of experimental density and turbidity currents[J] . Remo Cossu,Mathew G. Wells.European Journal of Mechanics / B Fluids . 2011
[3]  
The depositional characteristics of turbidity currents in submarine sinuous channels[J] . Heqing Huang,Jasim Imran,Carlos Pirmez.Marine Geology . 2012
[4]   The distribution characteristics of pollutants released at different cross-sectional positions of a river [J].
Huang, Heqing ;
Chen, Guang ;
Zhang, Qian-Feng .
ENVIRONMENTAL POLLUTION, 2010, 158 (05) :1327-1333
[5]  
Vertical structure of continuous release saline and turbidity currents[J] . Islam,M. Ashraful,Imran,Jasim.Journal of Geophysical Research. Oceans . 2010 (8)
[6]   Numerical model of turbidity currents with a deforming bottom boundary [J].
Huang, HQ ;
Imran, J ;
Pirmez, C .
JOURNAL OF HYDRAULIC ENGINEERING, 2005, 131 (04) :283-293
[7]   Flow structure of turbidity currents [J].
Felix, M .
SEDIMENTOLOGY, 2002, 49 (03) :397-419
[8]  
Hydraulic Jumps in Sediment‐Driven Bottom Currents[J] . Marcelo H. Garc&iacute,a.Journal of Hydraulic Engineering . 1993 (10)
[9]  
Modeling Vertical Structure of Open‐Channel Flows[J] . Alan F. Blumberg,Boris Galperin,Donald J. O’Connor.Journal of Hydraulic Engineering . 1992 (8)