Bottom friction effects on linear wave propagation
| Autor: | Álvaro Galán, Alejandro Orfila, Gonzalo Simarro, GA Zarruk |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
Linear theory Wave propagation Applied Mathematics WKB aproximation General Physics and Astronomy Boundary layer control Mechanics Boundary layer thickness Physics::Fluid Dynamics Computational Mathematics Boundary layer Classical mechanics Modeling and Simulation Blasius boundary layer No-slip condition Boundary value problem Phase velocity |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0165-2125 |
| Popis: | Bottom boundary layer effects on the linear wave propagation over mild slope bottoms are analyzed. A modified WKB approximation is presented including boundary layer effects. Within the boundary layer, two cases are considered: laminar (constant viscosity) and turbulent. Boundary layer effects are introduced by coupling the velocity inside the boundary layer to the irrotational velocity in the core region through the bottom boundary condition. This formulation properly accounts for the phase between near bed velocity and bed shear stress. The resulting differential equation for the energy conservation introduces a new term accounting for the energy losses due to the boundary layer effects. © 2009 Elsevier B.V. All rights reserved. The authors thank financial support from MEC thought Project CTM2006-12072 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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