A NUMERICAL INVESTIGATION ON ENERGY ABSORPTION FROM IRREGULAR WATER WAVES USING BRISTOL CYLINDER

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Saadati Nasab Mehran; Anbarsooz Morteza; PASSANDIDEH FARD MOHAMMAD

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Journal: Modares Mechanical Engineering Year:2018 | Volume:18 | Issue:3 Page(s): 429-439

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Title

A NUMERICAL INVESTIGATION ON ENERGY ABSORPTION FROM IRREGULAR WATER WAVES USING BRISTOL CYLINDER

Author(s)

Saadati Nasab Mehran | Anbarsooz Morteza | PASSANDIDEH FARD MOHAMMAD | Issue Writer Certificate

Keywords

BRISTOL CYLINDERQ1

NONLINEAR IRREGULAR WAVESQ1

WAVE ENERGY ABSORBERQ1

FICTITIOUS DOMAIN METHODQ1

ENERGY ABSORPTION EFFICIENCYQ1

Abstract

In this study, the performance of a cylinder absorbing wave energy from irregular incident waves, as one of the renewable energy systems, is investigated numerically using complete solution of the Navier-Stokes equations. For this purpose, the control volume approach in conjunction with the FICTITIOUS DOMAIN METHOD, for modeling the solid object motions inside fluid, are used where a two-step projection method is used to solve the governing equations. The results show that despite the cylinder absorbs energy in two main directions, its ENERGY ABSORPTION EFFICIENCY in irregular waves is about 8%. Due to the employed spring and damper in these devices, the system has only one natural frequency which is the reason for its low efficiency at irregular waves. Results also show that for steep waves at deep waters, the maximum efficiency occurs at larger spring coefficient and smaller damping coefficients, while at moderate water depths and wave steepness, the maximum efficiency occurs at smaller spring coefficients and larger damping coefficients. Therefore, to reach maximum ENERGY ABSORPTION EFFICIENCY at irregular waves, not only these coefficient has to be adjusted carefully, but also it is recommended to use multi-resonance systems or several cylinders with different natural frequencies.

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APA: Copy

Saadati Nasab, Mehran, Anbarsooz, Morteza, & PASSANDIDEH FARD, MOHAMMAD. (2018). A NUMERICAL INVESTIGATION ON ENERGY ABSORPTION FROM IRREGULAR WATER WAVES USING BRISTOL CYLINDER. MODARES MECHANICAL ENGINEERING, 18(3 ), 429-439. SID. https://sid.ir/paper/178961/en

Vancouver: Copy

Saadati Nasab Mehran, Anbarsooz Morteza, PASSANDIDEH FARD MOHAMMAD. A NUMERICAL INVESTIGATION ON ENERGY ABSORPTION FROM IRREGULAR WATER WAVES USING BRISTOL CYLINDER. MODARES MECHANICAL ENGINEERING[Internet]. 2018;18(3 ):429-439. Available from: https://sid.ir/paper/178961/en

IEEE: Copy

Mehran Saadati Nasab, Morteza Anbarsooz, and MOHAMMAD PASSANDIDEH FARD, “A NUMERICAL INVESTIGATION ON ENERGY ABSORPTION FROM IRREGULAR WATER WAVES USING BRISTOL CYLINDER,” MODARES MECHANICAL ENGINEERING, vol. 18, no. 3 , pp. 429–439, 2018, [Online]. Available: https://sid.ir/paper/178961/en

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