Waves generated by moving pressure disturbances in rectangular and trapezoidal channels

Waves generated by moving pressure disturbances in rectangular and trapezoidal channels

In this paper, the existing fully nonlinear and weakly dispersive depth-integrated wave equations are modified to include the effects of moving free surface pressure. We focus our investigation on waves generated by a moving free surface pressure distribution in rectangular and trapezoidal channels....

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Veröffentlicht in:Journal of hydraulic research 2004-01, Vol.42 (2), p.163-171
Hauptverfasser: Liu, Philip L.-F., Wu, Tso-Ren
Format: Artikel
Sprache:eng
Schlagworte:
Boussinesq equations
Earth sciences
Earth, ocean, space
Exact sciences and technology
Hydrology. Hydrogeology
moving boundary
moving disturbance
Moving pressure
ship-wave pattern
solitary wave
trapezoidal channel
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Wu, Tso-Ren
description In this paper, the existing fully nonlinear and weakly dispersive depth-integrated wave equations are modified to include the effects of moving free surface pressure. We focus our investigation on waves generated by a moving free surface pressure distribution in rectangular and trapezoidal channels. For the rectangular channels, the numerical results from the present model are compared with those obtained by the forced KdV equations, Green-Naghdi (GN) equations and the Boundary Integral Equation (BIEM) formulation based on the potential flow theory. Through these comparisons, the limitation for each approach is indicated. The present model is then employed as a tool to study the waves generated in a trapezoidal channel. A moving boundary condition is implemented to simulate the moving shoreline. Numerical experiments are performed for different channel geometry and Froude numbers.
doi_str_mv 10.1080/00221686.2004.9728379
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subjects Boussinesq equations
Earth sciences
Earth, ocean, space
Exact sciences and technology
Hydrology. Hydrogeology
moving boundary
moving disturbance
Moving pressure
ship-wave pattern
solitary wave
trapezoidal channel
title Waves generated by moving pressure disturbances in rectangular and trapezoidal channels
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