SYMMETRIC SURFACE WAVES OVER A BUMP
نویسندگان
چکیده
منابع مشابه
Energy distribution for waves in transcritical flows over a bump
Undisturbed water in a two-dimensional long channel obtains mechanical energy from a moving bump on the bottom of the channel. When the bump moves to the left at a speed near the critical shallow water wave velocity (gH) ‘12, the free surface of the water consists of a soliton zone upstream, and a uniform depression zone and a wake zone downstream. Lee, Yates and Wu [J. Fluid Mech. 199, 569-593...
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A forced Korteweg–de Vries (fKdV) equation can be used to model the surface wave of a twodimensional water flow over a bump when the upstream Froude number is near one. The fKdV model typically has four types of solutions: sub-critical cnoidal waves, sub-critical hydraulic fall, transcritical upstream soliton radiation, and supercritical multiple solitary waves. This paper provides a numerical ...
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Large-eddy simulation (LES) has been used to calculate the flow of a statistically two-dimensional turbulent boundary layer over a bump. Subgrid-scale stresses in the filtered Navier–Stokes equations were closed using the dynamic eddy viscosity model. LES predictions for a range of grid resolutions were compared to the experimental measurements of Webster et al. (1996). Predictions of the mean ...
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Transonic turbulent boundary-layer flow over a circular-arc bump has been computed by high-resolution large-eddy simulation of the compressible Navier–Stokes equations. The inflow turbulence was prescribed using a new technique, in which known dynamical features of the inner and outer part of the boundary-layer were exploited to produce a standard turbulent boundary-layer within a short distanc...
متن کاملScattering of surface waves over an uneven sea-bed
This work is concerned with the scattering of a train of progressive waves by a small undulation of the bottom of a laterally unbounded sea, using two-dimensional linear water wave theory. Assuming irrotational motion, a simplified perturbation analysis is employed to obtain the first-order corrections to the velocity potential by using the Green’s integral theorem in a suitable manner, and the...
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ژورنال
عنوان ژورنال: Journal of the Korean Mathematical Society
سال: 2003
ISSN: 0304-9914
DOI: 10.4134/jkms.2003.40.6.1051