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Optimization of Submerged Oscillatin...

Ghimire, Icewal,

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Optimization of Submerged Oscillating Water Column (SOWC) Energy Harvester /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Optimization of Submerged Oscillating Water Column (SOWC) Energy Harvester // Icewal Ghimire.
Author:	Ghimire, Icewal,
Description:	1 electronic resource (87 pages)
Notes:	Source: Masters Abstracts International, Volume: 86-11.
Contained By:	Masters Abstracts International86-11.
Subject:	Energy. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31999148
ISBN:	9798315735748

Optimization of Submerged Oscillating Water Column (SOWC) Energy Harvester /
Ghimire, Icewal,

Optimization of Submerged Oscillating Water Column (SOWC) Energy Harvester /Icewal Ghimire. - 1 electronic resource (87 pages)

Source: Masters Abstracts International, Volume: 86-11.

Ocean waves represent a valuable green energy resource with the potential to produce all around the clock unlike solar and wind which are intermittent. Additionally, with over 50% of the US population living within 50 miles of the ocean, power from the ocean reduces transmission costs. With this in mind, a promising concept called Submerged Oscillating Water Column (SOWC) is being studied at Idaho State University (ISU). This study proposes a new prototype design to increase the efficiency of SOWC devices. A SOWC consists of two submerged vertical pipes directing the water waves into two submerged chambers that are connected to allow the air to flow between as waves pass. As waves move over the SOWCs, the hydrostatic pressure fluctuates, causing the water level inside the chambers to oscillate, which can be converted into electrical energy using power-take off system. Computational modeling was used to evaluate the efficiency of the proposed prototype, defined as the conversion ratio of surface waves to waves in the chambers. Key parameters investigated are wave characteristics, water depth, and the vertical supply pipe diameter. Results indicate that the optimal diameter of vertical pipe is a diameter of 50% of the submerged chambers, and conversion rate is increased when oscillating columns are positioned further apart. Notably, as the wave period increases, efficiency also increases, ranging from 50% to 99%, approximately 20% improvement over previously proposed devices. Additionally, a half-cup-shaped modification to the vertical supply pipe improves velocity head and results in a further 20% efficiency gain mostly on higher wavelength. By optimizing design parameters and leveraging numerical simulations, this study aims to enhance SOWC efficiency, paving the way for more effective ocean wave energy harnessing.

English

ISBN: 9798315735748Subjects--Topical Terms:

876794
Energy.
Subjects--Index Terms:

Conversion ratio

Optimization of Submerged Oscillating Water Column (SOWC) Energy Harvester /
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245 1 0 $a Optimization of Submerged Oscillating Water Column (SOWC) Energy Harvester / $c Icewal Ghimire.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2025
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500 $a Source: Masters Abstracts International, Volume: 86-11.
500 $a Advisors: Savage, Bruce Committee members: Ebrahimpour, Arya; Pope, Chad L.
502 $b M.S. $c Idaho State University $d 2025.
520 $a Ocean waves represent a valuable green energy resource with the potential to produce all around the clock unlike solar and wind which are intermittent. Additionally, with over 50% of the US population living within 50 miles of the ocean, power from the ocean reduces transmission costs. With this in mind, a promising concept called Submerged Oscillating Water Column (SOWC) is being studied at Idaho State University (ISU). This study proposes a new prototype design to increase the efficiency of SOWC devices. A SOWC consists of two submerged vertical pipes directing the water waves into two submerged chambers that are connected to allow the air to flow between as waves pass. As waves move over the SOWCs, the hydrostatic pressure fluctuates, causing the water level inside the chambers to oscillate, which can be converted into electrical energy using power-take off system. Computational modeling was used to evaluate the efficiency of the proposed prototype, defined as the conversion ratio of surface waves to waves in the chambers. Key parameters investigated are wave characteristics, water depth, and the vertical supply pipe diameter. Results indicate that the optimal diameter of vertical pipe is a diameter of 50% of the submerged chambers, and conversion rate is increased when oscillating columns are positioned further apart. Notably, as the wave period increases, efficiency also increases, ranging from 50% to 99%, approximately 20% improvement over previously proposed devices. Additionally, a half-cup-shaped modification to the vertical supply pipe improves velocity head and results in a further 20% efficiency gain mostly on higher wavelength. By optimizing design parameters and leveraging numerical simulations, this study aims to enhance SOWC efficiency, paving the way for more effective ocean wave energy harnessing.
546 $a English
590 $a School code: 0320
650 4 $a Energy. $3 876794
650 4 $a Computer science. $3 523869
650 4 $a Physical oceanography. $3 3168433
650 4 $a Electrical engineering. $3 649834
653 $a Conversion ratio
653 $a Wave energy
653 $a Submerged Oscillating Water Columns
653 $a Idaho State University
653 $a Computational modeling
690 $a 0543
690 $a 0984
690 $a 0544
690 $a 0415
690 $a 0791
710 2 $a Idaho State University. $b College of Science and Engineering - Civil & Env Eng. $e degree granting institution. $3 3821797
720 1 $a Savage, Bruce $e degree supervisor.
773 0 $t Masters Abstracts International $g 86-11.
790 $a 0320
791 $a M.S.
792 $a 2025
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