Exciting forces for a wave energy device consisting of a pair of coaxial cylinders in water of finite depth

2013 ◽  
Vol 12 (3) ◽  
pp. 315-324 ◽  
Author(s):  
Mohammad Hassan ◽  
Swaroop Nandan Bora
Keyword(s):  
Wave Energy ◽  
Finite Depth ◽  
Energy Device ◽  
Coaxial Cylinders ◽  
Exciting Forces

scholarly journals Moment of Wave Energy Model in Water of Finite Depth

2020 ◽  
Vol 8 (5) ◽  
pp. 2781-2785
Keyword(s):  
Mathematical Models ◽  
Wave Field ◽  
Wave Energy ◽  
Continuous Flow ◽  
Electrical Energy ◽  
Finite Depth ◽  
Energy Model ◽  
Energy Device ◽  
Cylindrical Structure ◽  
Diffraction Wave

In this work, we have considered a particular wave energy device to create electrical energy in water. The device contains a submerged cylindrical obstacle placed above a plate which is also assumed as a cylindrical structure. Also the diffracted potentials are derived by applying several mathematical models for each region of the fluid. Due to continuous flow of the fluid, we have introduced a system of equation for some unknown constants which are involved in potentials expression. Finally, we derived moment of the device due to diffraction wave field and present graphically.

scholarly journals Moment of Wave Energy Model in Water of Finite Depth

2020 ◽  
Vol 9 (3) ◽  
pp. 1762-1766
Keyword(s):  
Mathematical Model ◽  
Wave Field ◽  
Wave Energy ◽  
Continuous Flow ◽  
Electrical Energy ◽  
Finite Depth ◽  
Energy Model ◽  
Energy Device ◽  
Cylindrical Structure ◽  
Diffraction Wave

In this work, we have consider a particular wave energy device to create electrical energy in water. The device contains a submerged cylindrical obstacle placed above a plate which is also assume as a cylindrical structure. Also the diffracted potentials are derived by applying several mathematical model for each region of the fluid. Due to continuous flow of the fluid, we have introduce a system of equation for some unknown constants which are involve in potentials expression. Finally, we derived moment of the device due to diffraction wave field and present graphically.

Theory of Short Wave Excitation

1986 ◽  
Vol 30 (03) ◽  
pp. 147-152
Author(s):  
Yong Kwun Chung
Keyword(s):  
Incident Wave ◽  
Characteristic Length ◽  
Finite Depth ◽  
Short Wave ◽  
The Body ◽  
Wave Number ◽  
Floating Body ◽  
Wave Excitation ◽  
Exciting Forces ◽  
Wave Exciting Forces

When the wavelength of the incident wave is short, the total surface potential on a floating body is found to be 2∅ i & O (m-l∅ i) on the lit surface and O (m-l∅ j) on the shadow surface where ~b i is the potential of the incident wave and m the wave number in water of finite depth. The present approximation for wave exciting forces and moments is reasonably good up to X/L ∅ 1 where h is the wavelength and L the characteristic length of the body.

Wave tank experiments on the power capture of a float-type wave energy device with a breakwater

2018 ◽  
Vol 10 (5) ◽  
pp. 054501 ◽  
Author(s):  
Wei Peng ◽  
Rui He ◽  
Jisheng Zhang ◽  
Tiaojian Xu
Keyword(s):  
Wave Energy ◽  
Energy Device ◽  
Wave Tank ◽  
Type Wave ◽  
Power Capture

scholarly journals Enhancement of a 3-DOF submerged wave energy device using bistability

2020 ◽  
Vol 3 (2) ◽  
pp. 73-82
Author(s):  
Benjamin Schubert ◽  
William S. P. Robertson ◽  
Benjamin S. Cazzolato
Keyword(s):  
Wave Energy ◽  
Degrees Of Freedom ◽  
Phase Relationship ◽  
Bistable System ◽  
Viscous Drag ◽  
Regular Waves ◽  
Point Absorber ◽  
Exciting Forces ◽  
Bistable Mechanism ◽  
The Impact

The dynamic response of a submerged CETO shaped quasi-point absorbing wave energy converter coupled to a bistable power take off is presented in this study. Whilst the impact of bistability has been shown in a limited number of situations to improve the amount of power generated, many models have been restricted to a single degree of freedom and often ignore drag effects. To overcome these model limitations, a submerged single tether point absorber with a bistable power take off was modelled using both 1 and 3 degrees of freedom. The device was subjected to regular waves and included a simple model of viscous drag. The bistable mechanism was provided by a magnetic dipole model quantified by a dimensionless parameter applicable to any bistable system. The performance of the device was is assessed by the theoretical power generated. Over each model, the previously observed benefit of bistability was not consistently obtained. Simulations of regular waves demonstrated an increase in generated power for suboptimal conditions for some frequencies, while a reduction in generated power was observed in optimal conditions. The performance increase showed strong correlation to the phase relationship between the motion and exciting forces as a result of bistability.

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