Wave interaction with cylindrical porous piles

Silva, R.; Govaere, Georges; Salles, Paulo

doi:10.1016/s0029-8018(03)00012-x

Cited by 17 publications

(2 citation statements)

References 15 publications

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“…The effect of 5 a multi-directional focused wave on wave loads was investigated. The interaction of waves with porous circular cylinder and cylinders were studied theoretically by Silva et al (2002Silva et al ( , 2003, and then it was extended to unidirectional and multi-directional waves, it was found that as the spectrum broadens in frequency and angle, the modulation around the structure damps faster.…”

Section: Introductionmentioning

confidence: 99%

Multi-directional random wave interaction with an array of cylinders

Liu

Bingham

et al. 2015

Ocean Engineering

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. (2015). Multi-directional random wave interaction with an array of cylinders. Ocean Engineering, 110, 62-77. DOI: 10.1016/j.oceaneng.2015 ABSTRACTBased on the linear theory of wave interaction with an array of circular bottom-mounted vertical cylinders, systematic calculations are made to investigate the effects of the wave directionality on wave loads in short-crested seas. The multi-directional waves are specified using a discrete form of the Mitsuyasu-type spreading function. The time series of multi-directional wave loads, including both the wave run-up and the wave force, can be simulated. The effect of wave directionality on the wave run-up and wave loading on the cylinders is investigated. For multi-directional random waves, as the distribution of wave spreading becomes wider, the wave run-up at some points around the cylinders is found to increase. This suggests that multi-directional wave run-up tends to be larger than unidirectional wave run-up. In addition, the wave directionality has a significant influence on the transverse force. The biggest transverse force is found to occur on the rear cylinder rather than the front one. This is quite different from the results in unidirectional waves and should be paid much more attention in the design of offshore structures. At last, the possibility of the near-trapping under the multi-directional random waves is investigated. It is found that the near-trapping also occurs for multi-directional wave conditions.

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Section: Introductionmentioning

confidence: 99%

Multi-directional random wave interaction with an array of cylinders

Liu

Bingham

et al. 2015

Ocean Engineering

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“…The interaction of waves with arrays of bottom-mounted porous circular cylinders has also been investigated (e.g. Williams and Li [6] and Silva et al [7]). …”

Section: Introductionmentioning

confidence: 99%

Wave forces acting on a semi-submerged porous circular cylinder

Bao

Kinoshita

Zhao

2009

Proceedings of the Institution of Mechanical Engineers, Part M:

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With potential applications in aquaculture as a sea cage or as floating breakwaters, a porous circular-cylinder semi-submerged in waves is investigated under the assumption of linear wave theory. To simplify the problem, the linear Darcy's law is applied to the porous boundary. The problem is solved by means of the eigenfunction expansion. The fluid domain is divided into two regions and different eigenfunctions are used. There are two horizontal porous plates in the inner region, i.e. the cover and bottom of the cylinder. This leads to a complicated 'dispersion' relation to determine the eigenvalues, the solutions of which are complex numbers. To solve the radiation problem, some particular solutions are sought to take account of the normal velocity of the body. The hydrodynamic forces are evaluated by integrating the pressure difference on the two sides of body surface. Computed examples are presented to observe the effects of porosity. The Haskind relations are examined for the porous body. It is found that the damping coefficient consists of two parts. In addition to the component of conventional wave-radiating damping, there exists a second component caused by the porous effects.

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Analyses of the problems of multicolored wave diffraction by porous circular dock and disk

Huang

Zhan

2006

J Hydrodyn

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Wave interaction with cylindrical porous piles

Cited by 17 publications

References 15 publications

Multi-directional random wave interaction with an array of cylinders

Multi-directional random wave interaction with an array of cylinders

Wave forces acting on a semi-submerged porous circular cylinder

Analyses of the problems of multicolored wave diffraction by porous circular dock and disk

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