STUDY ON WAVE ENERGY CONVERSION CHARACTERISTICS OF SERIES TWO-DUCT FLOATING MODEL WITH UNEQUAL CROSS-SECTION

Qin Zizhen; Wu Bijun; Zhang Fuming

doi:10.19912/j.0254-0096.tynxb.2021-0764

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 476-481. DOI: 10.19912/j.0254-0096.tynxb.2021-0764

STUDY ON WAVE ENERGY CONVERSION CHARACTERISTICS OF SERIES TWO-DUCT FLOATING MODEL WITH UNEQUAL CROSS-SECTION

Qin Zizhen, Wu Bijun, Zhang Fuming

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Abstract

A new oscillating water column device is proposed, which has two working modes of backward bent duct buoy（BBDB）and straight duct. Through the flume experiments, the influences of working mode, wave period, wave height and weight of the device on the conversion from wave energy to aerodynamic energy are discussed by flume experiment. The flume experiments show that when the model works in the BBDB mode, the Capture Width Ratio （CWR） can reach up to 138.6% under regular waves and 94% under random waves when airflow works bidirectionally, while the CWR can reach up to 113.7% under regular waves and 81.9% under random waves when the airflow in the chamber does work in both directions. When the model works in the straight duct mode, CWR can reach up to 81.1% under regular waves and 66.2% under random waves when the airflow in the chamber does work in both directions, while the CWR can reach up to 53.9% under regular waves and 42.1% under random waves when the airflow in the chamber does work in single direction. In the random wave experiment, the maximum CWR of the BBDB mode and the straight duct mode can reach 3 times and 2 times that of the “Mighty Whale” respectively. Obviously, the working mode of BBDB of the model has higher energy conversion characteristics.

Key words

wave energy / oscillating water column technology / capture width ratio / backward bent duct buoy / straight duct

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Qin Zizhen, Wu Bijun, Zhang Fuming. STUDY ON WAVE ENERGY CONVERSION CHARACTERISTICS OF SERIES TWO-DUCT FLOATING MODEL WITH UNEQUAL CROSS-SECTION[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 476-481 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0764

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