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contributor authorYao Liu
date accessioned2024-12-24T10:08:34Z
date available2024-12-24T10:08:34Z
date copyright11/1/2024 12:00:00 AM
date issued2024
identifier otherJWPED5.WWENG-2105.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4298376
description abstractThe Morison equation is extensively employed to consider viscous effects in hydrodynamic investigations of diverse wave energy converters using the boundary element method (BEM). Nonetheless, linearizing the nonlinear drag component in frequency-domain analysis and determining the appropriate drag coefficients present a challenge. This paper proposes a simple method using the completely linear form of the artificial damping torque equation to consider the energy dissipation due to viscosity in the frequency-domain BEM analysis of bottom-hinged oscillating surge wave energy converters (OSWECs) under regular waves. Similar to the drag coefficient, a constant artificial damping ratio demonstrates applicability across various wave periods for a given OSWEC, with its most pronounced effects observed near the natural periods. Through scanning different values, the fittest artificial damping ratio is determined by minimizing the deviation between the BEM responses and the experimental or high-fidelity computational fluid dynamics data. In contrast to the widely varying drag coefficients, the fittest artificial damping ratios for three OSWECs with different dimensions fall within a narrow range. Hence, a recommended artificial damping ratio is proposed for the rapid approximate estimation of responses, particularly in the absence of validation data during the initial design phase.
publisherAmerican Society of Civil Engineers
titleSimple Method to Introduce Artificial Damping in Oscillating Surge Wave Energy Converters under Regular Waves Considering Viscous Effects
typeJournal Article
journal volume150
journal issue6
journal titleJournal of Waterway, Port, Coastal, and Ocean Engineering
identifier doi10.1061/JWPED5.WWENG-2105
journal fristpage04024014-1
journal lastpage04024014-10
page10
treeJournal of Waterway, Port, Coastal, and Ocean Engineering:;2024:;Volume ( 150 ):;issue: 006
contenttypeFulltext


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