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.
Convective nature of planimetric instability in meandering river dynamics / Camporeale, CARLO VINCENZO; Ridolfi, Luca. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - STAMPA. - 73:(2006), pp. 026311-026311-8. [10.1103/PHYSREVE.73.026311]
Convective nature of planimetric instability in meandering river dynamics.
CAMPOREALE, CARLO VINCENZO;RIDOLFI, LUCA
2006
Abstract
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.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/1529070
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