A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt
In this study, numerical analysis and experiments were performed to analyze the viscous damping effect according to the shape of the chamber skirt of the breakwater-linked inclined oscillating water column wave energy converter. Experiments were conducted using a two-dimensional mini wave tank and v...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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The Korean Society of Ocean Engineers
2022-08-01
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| Series: | 한국해양공학회지 |
| Subjects: | |
| Online Access: | https://doi.org/10.26748/KSOE.2022.010 |
| _version_ | 1828341094972129280 |
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| author | Hyen-Cheol Jung Weoncheol Koo |
| author_facet | Hyen-Cheol Jung Weoncheol Koo |
| author_sort | Hyen-Cheol Jung |
| collection | DOAJ |
| description | In this study, numerical analysis and experiments were performed to analyze the viscous damping effect according to the shape of the chamber skirt of the breakwater-linked inclined oscillating water column wave energy converter. Experiments were conducted using a two-dimensional mini wave tank and verified by comparing the results of a computational fluid dynamics numerical analysis. Pointed and rounded skirts were modeled to compare the effect of viscous damping when incident waves enter the chamber, and the difference in the displacement of the water surface in the chamber was compared according to the wave period for the two skirt shapes. The wave elevation in the chamber in the rounded-skirt condition was larger than the pointed-skirt condition in all wave periods, which was approximately 47% greater at 0.9 s of the incident wave period. Therefore, extracting the maximum energy through the optimal orifice is possible while minimizing the energy attenuation in the rounded-skirt condition. |
| first_indexed | 2024-04-13T23:07:41Z |
| format | Article |
| id | doaj.art-a03fe2ca69f4406ea95754632fcd88c5 |
| institution | Directory Open Access Journal |
| issn | 1225-0767 2287-6715 |
| language | English |
| last_indexed | 2024-04-13T23:07:41Z |
| publishDate | 2022-08-01 |
| publisher | The Korean Society of Ocean Engineers |
| record_format | Article |
| series | 한국해양공학회지 |
| spelling | doaj.art-a03fe2ca69f4406ea95754632fcd88c52022-12-22T02:25:39ZengThe Korean Society of Ocean Engineers한국해양공학회지1225-07672287-67152022-08-0136427027910.26748/KSOE.2022.010A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber SkirtHyen-Cheol Jung0https://orcid.org/0000-0003-1274-8844Weoncheol Koo1https://orcid.org/0000-0002-4384-0996Inha UniversityInha UniversityIn this study, numerical analysis and experiments were performed to analyze the viscous damping effect according to the shape of the chamber skirt of the breakwater-linked inclined oscillating water column wave energy converter. Experiments were conducted using a two-dimensional mini wave tank and verified by comparing the results of a computational fluid dynamics numerical analysis. Pointed and rounded skirts were modeled to compare the effect of viscous damping when incident waves enter the chamber, and the difference in the displacement of the water surface in the chamber was compared according to the wave period for the two skirt shapes. The wave elevation in the chamber in the rounded-skirt condition was larger than the pointed-skirt condition in all wave periods, which was approximately 47% greater at 0.9 s of the incident wave period. Therefore, extracting the maximum energy through the optimal orifice is possible while minimizing the energy attenuation in the rounded-skirt condition.https://doi.org/10.26748/KSOE.2022.010inclined oscillating water columntwo-dimensional mini wave tankopen chamberorificeskirt shapeviscous damping effect |
| spellingShingle | Hyen-Cheol Jung Weoncheol Koo A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt 한국해양공학회지 inclined oscillating water column two-dimensional mini wave tank open chamber orifice skirt shape viscous damping effect |
| title | A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt |
| title_full | A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt |
| title_fullStr | A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt |
| title_full_unstemmed | A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt |
| title_short | A Study on the Viscous Damping Effect According to the Shape of the Inclined OWC Chamber Skirt |
| title_sort | study on the viscous damping effect according to the shape of the inclined owc chamber skirt |
| topic | inclined oscillating water column two-dimensional mini wave tank open chamber orifice skirt shape viscous damping effect |
| url | https://doi.org/10.26748/KSOE.2022.010 |
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