Results 1 to 10 of about 37,739 (257)
Simulation of Irregular Waves in a Numerical Wave Tank [PDF]
Polish Maritime Research, 2015 Abstract The time domain boundary element method was utilized to simulate the propagation of the irregular waves in a numerical wave tank. The problem was solved in a time-marching scheme, upon the irregular waves being fed through the inflow boundary, in which the theoretical solution was obtained from the wave energy spectrum.
Zhi-Fu, L. +4 more
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A PROGRAMMABLE IRREGULAR WAVE GENERATOR
Coastal Engineering Proceedings, 1974 An account is given of the various design considerations in the development of a low-cost programmable wave generator for a laboratory channel. The ability of this equipment to reproduce prototype spectra is critically discussed.
Norman B. Webber, Colin D. Christian
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Irregular Wave Transformation in a Boussinesq Wave Model
Coastal Engineering 1986, 1986 Numerical wave models for shallow water waves are of particular importance for the calculation of the wave climate in harbours and coastal areas. Especially nonlinear time domain models, which are based on the Boussinesq-Wave- Equations, may be helpful in the future for simulating the interaction of currents with refraction, diffraction, reflection and
H.H. Pruser, H. Schaper, W. Zielke
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Energy Spectra of Irregular Surf Waves [PDF]
Coastal Engineering 1976, 1976 The investigations under consideration are based on synchronous measurements of water level deflections n(t) at some positions in a beach profile with a slope of approximately 1:40. Surf conditions are studied during a severe storm surge as well as during periods of attenuating wave action.
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Investigations on Irregular Waves in Hydraulic Models
Coastal Engineering 1980, 1980 The first part of the paper deals with some aspects of wave generation by mechanical wave-generators, especially with hydraulic transfer functions for pusher movement of the paddle, and the influences of signal characteristics and analysis methods. In the second part, results of measurements of orbital velocities and pressures in irregular waves are ...
Karl-Friedrich Daemrich +2 more
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Irregular Wave Overtopping Rates
Coastal Engineering 1984, 1984 Methods for estimating wave overtopping of coastal structures are reviewed and compared with the very limited available data and with each other. The different methods yield results which can vary more than an order-of-magnitude. For vertical seawalls, the U. S.
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MOORED SHIP RESPONSE IN IRREGULAR WAVES
Coastal Engineering Proceedings, 1982 The traditional concept of representing a "random" sea state by just a variance spectral density has been found to be insufficient for modelling the slow drift oscillations of large moored ships. This paper illustrates, through experimental investigations, the importance of including wave grouping as an additional design parameter.
E.P.D. Mansard, B.D. Pratte
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Directional Irregular Wave Kinematics [PDF]
, 1998 Abstract : Coastal and ocean processes are heavily influenced by the kinematics of waves. In order to understand these processes, researchers place a variety of instruments in the sea in an attempt to measure the waves. These instruments all measure a small set of physical quantities at a small number of locations. The balance of the kinematics must be
Rodney J. Sobey, Christopher H. Barker
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Orbital Velocities in Irregular Waves
Coastal Engineering 1980, 1980 Experimental and theoretical study to determine the applicability of linear wave theory for the description of the velocity field in irregular waves. A comparison between theory and measurement was executed both in frequency and in time domain. In frequency domain by means of the experimentally and theoretically determined frequency response functions ...
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Transformation of Irregular Waves in Shoaling Water
Coastal Engineering 1974, 1974 In the numerical method of prediction of wind waves in deep water, Hasselmann's nonlinear interaction theory is applied. This method assumes the energy balance of individual component waves. However, the total energy balance must exist in the transformation of irregular waves in shoaling water. In this investigation, experiments were carried out on the
Tetsuo Sakai, Yuichi Iwagaki
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