Convective nature of the planimetric instability in meandering river dynamics

被引:10
作者
Camporeale, C [1 ]
Ridolfi, L [1 ]
机构
[1] Politecn Torino, Dept Hydraul, Turin, Italy
来源
PHYSICAL REVIEW E | 2006年 / 73卷 / 02期
关键词
D O I
10.1103/PhysRevE.73.026311
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The convective nature of the linear instability of meandering river dynamics is analytically demonstrated and the corresponding Green's function is derived. The wave packet due to impulsive disturbance migrates along a river either downstream or upstream, depending on the subresonant or superresonant conditions. The influence of the parameters that govern the meandering process is shown and the role of the fluid dynamic detail used to describe the morphodynamic problem is discussed. A numerical simulation of the river planimetry is also developed.
引用
收藏
页数:8
相关论文
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