Experience In Computing Wave Loads on Large Bodies

Hogben, N.; Standing, R G

doi:10.4043/2189-ms

Cited by 32 publications

(8 citation statements)

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“…As a simple test this was applied to a right circular cylinder fixed to the bed in water of depth h: the cylinder was 0.7h high and had a diameter c;f 0-4h. These are the same relative dimensions as those of one of the cylinders tested by Hogben & Standing (1975) at the National Physical Laboratory, which gave the experimental points on figures 2 and 3. Results from the calculations of the present work are shown by the continuous line in each case.…”

Section: Resultsmentioning

confidence: 83%

“…From (1.7) and (1.10) we have F(t) = Re [ipaecivtSA ($i + $s) A d A ] , in which Substituting the Fourier expansionA = iz' cos 0 + jz' sin 0 -kr', d A = R d 0 dS. W $ = $ i + $ 8 = c $,cOsie1=0 Variation of (a) dimensionless drag force and (b) dimensionless vertical force with wavenumber for a truncated circular cylinder of height 0.7 and diameter 0.4 of the water depth h. 0 , experimental results fromHogben & Standing (1975) ; -, results from the present theory using the elemental subdivision shown in the inset in (a). Fz = horizontal force, Fz = vertical force, p = fluid density, a = wave amplitude, D = cylinder diameter, k = wavenumber.…”

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confidence: 99%

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Wave forces on vertical bodies of revolution

Fenton

1978

J. Fluid Mech.

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The axisymmetry of a body which is diffracting water waves may be exploited to give a line integral equation to be solved for the scattered wave field and forces on the body. Each term in a previously established surface integral equation is shown to be expressible as a Fourier series, which is then integrated once analytically. The resulting one-dimensional equation is shown to possess singularities, previously ignored by Black (1975). This equation, with series transformations and subtraction of singularities such that all series are quickly convergent and that it has to be solved only along a curve, reduces computational effort by some three orders of magnitude. Results obtained by this method give good agreement with previous analytical and experimental results, even if a rather coarse numerical approximation is used.

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Section: Resultsmentioning

confidence: 83%

mentioning

confidence: 99%

Wave forces on vertical bodies of revolution

Fenton

1978

J. Fluid Mech.

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“…According to the offshore wind standard DNV (2014), the current-induced forces can be treated with the Morison equation by using a mean or depth-varying current velocity. For further information regarding currents and current-wave interaction see e.g., Chakrabarti (2005) and Hogben and Standing (1975).…”

Section: Current Loadingmentioning

confidence: 99%

Grouted connections on offshore wind turbines: a review

Tziavos¹,

Hemida²,

Metje³

et al. 2016

Proceedings of the Institution of Civil Engineers - Engineering

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policyWhile the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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“…Hogben and Standing summarized the effects of currents on large structures into three modes [51]. These include a modification to the wave speed which depends on the magnitude of the current, a drag force which can be treated by Morison's equation and lastly wave-making resistance.…”

Section: Current Loadsmentioning

confidence: 99%

Hydrodynamics of offshore structures with specific focus on wind energy applications

Benitz

Lackner

Schmidt

2015

Renewable and Sustainable Energy Reviews

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This review covers the broad scope of ocean hydrodynamics on offshore marine structures, laying the framework for studying offshore wind energy with a variety of engineering methods. First, water wave theory is described beginning with the fundamental equations of fluid mechanics. A variety of wave theories are discussed, beginning with linearized wave theory, and continuing with Stokes, cnoidal and solitary wave theory. The regions of wave applicability for different theories is shown, summarizing the discussion of water wave theory. Following the introduction of water wave theory, ocean physics are introduced. This section includes ocean wave generation, random waves, spectral representation and commonly used wave spectra, including the Pierson-Moskowitz and JONSWAP spectra. Next, wave-body interaction is presented, first looking at static and then dynamic loads. The dynamic load discussion covers waves, added mass and impulse loads. The section on wave-body interaction concludes with a review of recent literature on wave-body interactions, with emphasis on offshore wind energy. Additionally, a sample of existing engineering tools for modeling hydrodynamics on offshore wind turbines is presented. Finally, finite volume methods are presented to lay the groundwork for reviewing recent computational fluid dynamics research relating to the wave-body interaction problem. The review culminates in a review of recent CFD research.

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Experience In Computing Wave Loads on Large Bodies

Cited by 32 publications

References 0 publications

Wave forces on vertical bodies of revolution

Wave forces on vertical bodies of revolution

Grouted connections on offshore wind turbines: a review

Hydrodynamics of offshore structures with specific focus on wind energy applications

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