Wave–structure interactions for the distensible tube wave energy converter

Smith, Warren R.

doi:10.1098/rspa.2016.0160

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Later tests at the same scale were also undertaken at Southampton Solent University, without PTO optimisation [86]. Linear and nonlinear mathematical models of the converter are also available [84,87]. In 2016, Checkmate Seanergy conducted further experiments at Strathclyde University, supported by the Novel Wave Energy Converter funding campaign by Wave Energy Scotland (WES).…”

Section: Bulge Wave Devicesmentioning

confidence: 99%

Niche Applications and Flexible Devices for Wave Energy Conversion: A Review

et al. 2021

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We review wave energy conversion technologies for niche applications, i.e., kilowatt-scale systems that allow for more agile design, faster deployment and easier operation than utility scale systems. The wave energy converters for niche markets analysed in this paper are classified into breakwater-integrated, hybrid, devices for special applications. We show that niche markets are emerging as a very vibrant landscape, with several such technologies having now achieved operational stage, and others undergoing full-scale sea trials. This review also includes flexible devices, which started as niche applications in the 1980s and are now close to commercial maturity. We discuss the strong potential of flexible devices in reducing costs and improving survivability and reliability of wave energy systems. Finally, we show that the use of WECs in niche applications is supporting the development of utility-scale projects by accumulating field experience, demonstrating success stories of grid integration and building confidence for stakeholders.

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Section: Bulge Wave Devicesmentioning

confidence: 99%

Niche Applications and Flexible Devices for Wave Energy Conversion: A Review

et al. 2021

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“…Hyperelastic tubes are commonly found in various applications ranging from soft robotics (Ma et al, 2015;Lu et al, 2015Lu et al, , 2020 to energy harvesting (Lu & Suo, 2012;Bucchi & Hearn, 2013;Smith, 2016). They are also used to model human arteries in order to understand pathological conditions such as aneurysms (Fu et al, 2012;Alhayani et al, 2014;Demirkoparan & Merodio, 2017;Varatharajan & DasGupta, 2017;Hejazi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

A one-dimensional model for axisymmetric deformations of an inflated hyperelastic tube of finite wall thickness

Fu¹

2023

Preprint

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We derive a one-dimensional (1d) model for the analysis of bulging or necking in an inflated hyperelastic tube of finite wall thickness from the three-dimensional finite elasticity theory by applying the dimension reduction methodology proposed by Audoly and Hutchinson (J. Mech. Phys. Solids, 97, 2016). The 1d model makes it much easier to characterize fully nonlinear axisymmetric deformations of a thick-walled tube using simple numerical schemes such as the finite difference method. The new model recovers the diffuse interface model for analyzing bulging in a membrane tube and the 1d model for investigating necking in a stretched solid cylinder as two limiting cases. It is consistent with, but significantly refines, the exact linear and weakly nonlinear bifurcation analyses. Comparisons with finite element simulations show that for the bulging problem, the 1d model is capable of describing the entire bulging process accurately, from initiation, growth, to propagation. The 1d model provides a stepping stone from which similar 1d models can be derived and used to study other effects such as anisotropy and electric loading, and other phenomena such as rupture.

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Wave-attenuation efficiency of a floating distensible tube at different Keulegan–Carpenter numbers

Mendes,

Braga

2023

SN Appl. Sci.

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A water-filled floating rubber tube is tested in a wave flume under regular waves of different steepness. The wave excited pressure bulges in the tube induce periodic oscillations of a forward-bent water column at its stern, which in turn activate a pneumatic power take-off system. The purpose of the experiment is to better understand how the tube’s working modes contribute to the wave energy absorption and to quantify the power extracted from the incident waves. By applying Bernoulli’s equation for incompressible airflow, the water column free-surface displacement measurements deliver the pneumatic chamber pressure and the volume flow through the power take-off. Video captions help to reveal the interactions of the tube with the incident waves and further relate them to the system’s efficiency. Additionally, an energy balance enables the assessment of the internal friction and flow separation losses, at different Reynolds and Keulegan–Carpenter numbers. The hydrodynamic and overall efficiencies of the system are ultimately provided.

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Wave–structure interactions for the distensible tube wave energy converter

Cited by 5 publications

References 12 publications

Niche Applications and Flexible Devices for Wave Energy Conversion: A Review

Niche Applications and Flexible Devices for Wave Energy Conversion: A Review

A one-dimensional model for axisymmetric deformations of an inflated hyperelastic tube of finite wall thickness

Wave-attenuation efficiency of a floating distensible tube at different Keulegan–Carpenter numbers

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