Experimental Assessment of Hydrodynamic Coefficients for a Heave Plate Executing Pitch Oscillations

Abazari, Abuzar; Behzad, Mahdi; Thiagarajan, Krish

doi:10.1061/(asce)ww.1943-5460.0000683

Cited by 3 publications

(2 citation statements)

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“…More recently, Shrestha et al (2018) conducted experiments on forced oscillations of a submerged, horizontal plate, primarily focusing on the dynamics of vortex shedding and convection from the oscillating plate. Molin et al (2007), Koh and Cho (2016), Rao et al (2021a,b) and Abazari et al (2022) conducted laboratory experiments on the impact of horizontal submerged plates on damping the wave-induced oscillations of vertical cylinders. Koh and Cho (2016) also developed a model based on the eigenfunction expansion method, within the context of linear potential theory, primarily to assess how the heave oscillations of the vertical cylinder attached to the submerged plates are affected, while the same was pursued by Rajagopalan and Nihous (2016), Rao et al (2021b), Abazari et al (2022) and Pinguet et al (2022) through computational fluid dynamics approach.…”

Section: Introductionmentioning

confidence: 99%

“…Molin et al (2007), Koh and Cho (2016), Rao et al (2021a,b) and Abazari et al (2022) conducted laboratory experiments on the impact of horizontal submerged plates on damping the wave-induced oscillations of vertical cylinders. Koh and Cho (2016) also developed a model based on the eigenfunction expansion method, within the context of linear potential theory, primarily to assess how the heave oscillations of the vertical cylinder attached to the submerged plates are affected, while the same was pursued by Rajagopalan and Nihous (2016), Rao et al (2021b), Abazari et al (2022) and Pinguet et al (2022) through computational fluid dynamics approach. Focusing on the extraction of wave energy, Alam (2012) and Desmars et al (2018) investigated wave interaction with submerged plates attached to a spring-damper system by use of a high-order spectral method and the boundary element method, respectively, the plate in these cases, however, is placed on the seafloor (submerged flexible carpets).…”

Section: Introductionmentioning

confidence: 99%

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Experiments and computations of wave-induced oscillations of submerged horizontal plates

et al. 2023

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Wave-induced oscillations of submerged horizontal plates are studied by conducting laboratory experiments and by developing theoretical and computational models. These models include a linear solver based on the Green-function method, a nonlinear model based on Green–Naghdi wave equations, and a model based on computational fluid dynamics. The submerged horizontal plate oscillates in the vertical direction due to oscillatory wave loads. Oscillations of the plate are controlled by the use of a spring-damper system. Laboratory measurements and the models provide quantitative information on (i) how oscillations of submerged plates vary with wave conditions, plate characteristics, and the control system and (ii) how different models using different levels of assumptions predict the wave-induced oscillations. Particular attention is given to energy-production applications of the submerged oscillating plate, and discussion is provided on how the oscillation height and velocity vary with its initial submergence depth, stiffness of the attached spring, and the strength of the viscous damper. It is found that the oscillation varies almost linearly with the wave height, but nonlinearly with the wave period, initial submergence depth of the plate, damping, and the spring stiffness. Overall, it is found that nonlinearity plays an important role in this problem, while the effect of viscosity is negligible.

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