scholarly journals Solitary-wave loads on a three-dimensional submerged horizontal plate: Numerical computations and comparison with experiments

2021 ◽  
Vol 33 (3) ◽  
pp. 037129
Author(s):  
Tian Geng ◽  
Hua Liu ◽  
Frederic Dias
Keyword(s):  
Solitary Wave ◽  
Three Dimensional ◽  
Wave Loads ◽  
Horizontal Plate ◽  
Numerical Computations ◽  
Submerged Horizontal Plate ◽  
Comparison With Experiments

scholarly journals Effects of Wave Breaking over Submerged Horizontal Plate on Solitary Wave Control

2021 ◽  
Vol 8 (1) ◽  
pp. 9-19
Author(s):  
Woo-Dong Lee ◽  
Sang-Yeop Lee ◽  
Yeong-Han Jeong ◽  
Jong-Ryul Park ◽  
Dong-Soo Hur
Keyword(s):  
Solitary Wave ◽  
Wave Breaking ◽  
Horizontal Plate ◽  
Submerged Horizontal Plate ◽  
Wave Control

scholarly journals Simulating the interaction of solitary wave and submerged horizontal plate using SPH method

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Mirhossein Aghili ◽  
Parviz Ghadimi ◽  
Yaser Faghfoor Maghrebi ◽  
Hashem Nowruzi
Keyword(s):  
Solitary Wave ◽  
Horizontal Plate ◽  
Sph Method ◽  
Submerged Horizontal Plate

scholarly journals An Experimental Investigation of Wave Forces on a Submerged Horizontal Plate over a Simple Slope

2020 ◽  
Vol 8 (7) ◽  
pp. 507
Author(s):  
Jie Dong ◽  
Leiping Xue ◽  
Kaiyu Cheng ◽  
Jian Shi ◽  
Chi Zhang
Keyword(s):  
Wave Length ◽  
Wave Forces ◽  
Linear Wave ◽  
Intermediate Water ◽  
Vertical Force ◽  
Wave Loads ◽  
Horizontal Plate ◽  
Flat Bottom ◽  
Simple Slope ◽  
Submerged Horizontal Plate

We experimentally investigated the forces induced by monochromatic and solitary waves on a submerged horizontal plate in a wave flume. The experimental results of two-dimensional wave forces on the plate over a 1:10 simple slope and a flat bottom are presented. The effects of the uneven bottom on wave loads are discussed by comparing the results with those in a constant water depth. The measured nonlinear wave forces exhibited considerable discrepancies with the theoretical results from the linear wave theory. The wave forces on the plate induced by monochromatic waves over the simple slope in intermediate water showed no appreciable difference with the flat-bottom results. The solitary wave forces in terms of the downward vertical force and overturning moment significantly decreased in the existence of the simple slope. Furthermore, the dependency of the wave length, wave height and the submergence depth on the wave loads is also discussed.

Surface Evolution and Wave Loads on a Horizontal Plate in Different Tsunami-like Waves

2020 ◽  
Vol 14 (05) ◽  
pp. 2040001
Author(s):  
Qian Wang ◽  
Yong-Liu Fang ◽  
Hua Liu
Keyword(s):  
Solitary Wave ◽  
Wave Force ◽  
Hydrodynamic Characteristics ◽  
Vertical Force ◽  
Wave Loads ◽  
Horizontal Plate ◽  
Local Pressure ◽  
Surface Evolution ◽  
Undular Bore ◽  
Physical Experiments

Physical experiments are conducted to study the interaction between the tsunami-like waves and the horizontal plate. The surface evolution and wave-induced loads are measured to explore the hydrodynamic characteristics when different waves are employed to simulate the tsunami. The solitary wave, surge wave, and undular bore are generated in laboratory as the simplification of the offshore tsunami wave. The bottom-fixed plate places near the free surface. It is found that the elevated plate attenuates the solitary waves locally, while the submerged plate leads to the wave focus phenomenon. The plate has less influence on the surface variation of the surge wave propagating. Results of loads show the different loading process of each tsunami-like wave. The inertial wave force and the local pressure from the rising surface dominate the inline force and vertical force, respectively. The value of loads induced by the surge wave is less than that of the solitary wave. The undular bore is generated by the superimposition of the solitary wave on the surge wave. The part of the solitary wave plays a local role in the wave force, while the surge part dominates the surface evolution.

Flow Structures Induced by a Solitary Wave Propagating Over a Submerged Horizontal Plate

APAC 2019 ◽  
2019 ◽  
pp. 41-48
Author(s):  
Xuyang Niu ◽  
Yuxiang Ma ◽  
Guohai Dong ◽  
Kuang-An Chang
Keyword(s):  
Solitary Wave ◽  
Flow Structures ◽  
Horizontal Plate ◽  
Submerged Horizontal Plate

Fully Coupled Three-Dimensional Dynamic Response of a TLP Floating Wind Turbine in Waves and Wind

2012 ◽  
Author(s):  
G. K. V. Ramachandran ◽  
H. Bredmose ◽  
J. N. Sørensen ◽  
J. J. Jensen
Keyword(s):  
Wind Turbine ◽  
Dynamic Model ◽  
Three Dimensional ◽  
Geographic Location ◽  
Climatic Conditions ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Total System ◽  
Wave Loads ◽  
Aerodynamic Loads

A dynamic model for a tension-leg platform (TLP) floating offshore wind turbine is proposed. The model includes three-dimensional wind and wave loads and the associated structural response. The total system is formulated using 17 degrees of freedom (DOF), 6 for the platform motions and 11 for the wind turbine. Three-dimensional hydrodynamic loads have been formulated using a frequency- and direction-dependent spectrum. While wave loads are computed from the wave kinematics using Morison’s equation, aerodynamic loads are modelled by means of unsteady Blade-Element-Momentum (BEM) theory, including Glauert correction for high values of axial induction factor, dynamic stall, dynamic wake and dynamic yaw. The aerodynamic model takes into account the wind shear and turbulence effects. For a representative geographic location, platform responses are obtained for a set of wind and wave climatic conditions. The platform responses show an influence from the aerodynamic loads, most clearly through a quasi-steady mean surge and pitch response associated with the mean wind. Further, the aerodynamic loads show an influence from the platform motion through more fluctuating rotor loads, which is a consequence of the wave-induced rotor dynamics. In the absence of a controller scheme for the wind turbine, the rotor torque fluctuates considerably, which induces a growing roll response especially when the wind turbine is operated nearly at the rated wind speed. This can be eliminated either by appropriately adjusting the controller so as to regulate the torque or by optimizing the floater or tendon dimensions, thereby limiting the roll motion. Loads and coupled responses are predicted for a set of load cases with different wave headings. Based on the results, critical load cases are identified and discussed. As a next step (which is not presented here), the dynamic model for the substructure is therefore being coupled to an advanced aero-elastic code Flex5, Øye (1996), which has a higher number of DOFs and a controller module.

Diverse bistable dark novel explicit wave solutions of cubic–quintic nonlinear Helmholtz model

2021 ◽  
pp. 2150441
Author(s):  
Mostafa M. A. Khater
Keyword(s):  
Solitary Wave ◽  
Schrödinger Equation ◽  
General Model ◽  
Schrodinger Equation ◽  
Three Dimensional ◽  
Solitary Wave Solutions ◽  
Computational Schemes ◽  
Nonlinear Schrödinger ◽  
Wave Solutions

This paper examines three different recent computational schemes (extended simplest equation (ESE) method, modified Kudryashov (MKud) method, and modified Khater (MKha) method) for obtaining novel solitary wave solutions of cubic–quintic nonlinear Helmholtz (CQ–NLH) model. This model is considered as a general model of the well-known Schrödinger equation where it takes into account the effects of backward scattering that are neglected in the more common nonlinear Schrödinger model. Many distinct wave solutions are explained in the different formulas, such as trigonometric, rational, and hyperbolic formulas. These solutions are described in some precise sketches in two- and three-dimensional. The methods’ performance is explained to demonstrate their effectiveness and power.

Numerical Analysis of Ship Wave Loads and Structure Strengthen Analysis on a Wind Power Installation Ship

2011 ◽  
Vol 90-93 ◽  
pp. 2521-2527
Author(s):  
Gang Qiang Li ◽  
Yan Yan Zhao ◽  
Yong He Xie
Keyword(s):  
Wind Power ◽  
Structural Design ◽  
Three Dimensional ◽  
Load Condition ◽  
Wave Loads ◽  
Element Simulation ◽  
Wind Power Installation ◽  
Wave Induced ◽  
Term Response

In a typical load condition of wind power equipment Installation ship, using the three-dimensional potential flow theory to prediction the long-term response of wave induced loads. then using the main load control parameters as a basis for the design wave selection, then application of DNV's SESTRA program make the wave-induced directly to the structure to finite element simulation. The results show that the hull structural design can meet the requirements.

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