Results 21 to 30 of about 32,720 (264)
Shock and Vibration, 2016 The irregular wave condition, especially the oblique irregular wave condition, is the actual circumstances when trimaran is sailing in sea. In order to identify the characteristic of the wave-induced hydroelastic vibration in irregular waves, as well as ...
Haoyun Tang +3 more
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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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Polish Maritime Research, 2021 The most common methods for predicting ship roll motions in a specified sea state are direct measurements of motions in a representative irregular wave realisation (time domain) or calculations of motions from response amplitude operators (RAOs) in the ...
Bielicki Sebastian
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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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SensorsThe propagation of shallow-water waves may cause liquefaction of the seabed, thereby reducing its support capacity for pipelines and potentially leading to pipeline settlement or deformation.
Changjing Fu, Jinguo Wang, Tianlong Zhao
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Slow Drift-Oscillations of a Ship in Irregular Waves [PDF]
Modeling, Identification and Control, 1980 A procedure to calculate horizontal slow drift excitation forces on an infinitely long horizontal cylinder in irregular beam sea waves is presented. The hydrodynamic boundary-value problem is solved correctly to second order in wave amplitude. Results in
Odd M. Faltinsen, Arne E. Løken
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