Comparison of the performance of oscillating water column devices based on arrangements of water columns
The hydrodynamic performance of oscillating water column (OWC) depends on the depth of the water, the size of the water column and its arrangement, which affects the oscillation of the water surface in the column. An experimental method was conducted by testing 4 water depths with wave periods of 1-...
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| Format: | Article |
| Language: | English |
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Universiti Malaysia Pahang Publishing
2020-09-01
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| Series: | Journal of Mechanical Engineering and Sciences |
| Subjects: | |
| Online Access: | https://journal.ump.edu.my/jmes/article/view/2845 |
| _version_ | 1797698463071207424 |
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| author | Jahirwan Ut Jasron Sudjito Soeparmani Lilis Yuliati Djarot B. Darmadi |
| author_facet | Jahirwan Ut Jasron Sudjito Soeparmani Lilis Yuliati Djarot B. Darmadi |
| author_sort | Jahirwan Ut Jasron |
| collection | DOAJ |
| description | The hydrodynamic performance of oscillating water column (OWC) depends on the depth of the water, the size of the water column and its arrangement, which affects the oscillation of the water surface in the column. An experimental method was conducted by testing 4 water depths with wave periods of 1-3 s. All data recorded by the sensor is then processed and presented in graphical form. The research focused on analyzing the difference in wave power absorption capabilities of the three geometric types of OWC based on arrangements of water columns. The OWC devices designed as single water column, the double water column in a series arrangement which was perpendicular to the direction of wave propagation, and double water column in which the arrangement of columns was parallel to the direction of wave propagation. This paper discussed several factors affecting the amount of power absorbed by the device. The factors are the ratio of water depth in its relation to wavelength (kh) and the inlet openings ratio (c/h) of the devices. The test results show that if the water depth increases in the range of kh 0.7 to 0.9, then the performance of the double chamber oscillating water column (DCOWC) device is better than the single chamber oscillating water column (SCOWC) device with maximum efficiency for the parallel arrangement 22,4%, series arrangement 20.8% and single column 20.7%. However, when referring to c/h, the maximum energy absorption efficiency for a single column is 27.7%, double column series arrangement is 23.2%, and double column parallel arrangement is 29.5%. Based on the results of the analysis, DCOWC devices in parallel arrangement showed the ability to absorb better wave power in a broader range of wave frequencies. The best wave of power absorption in the three testing models occurred in the wave period T = 1.3 seconds. |
| first_indexed | 2024-03-12T03:54:29Z |
| format | Article |
| id | doaj.art-2ac924687dcc432abf481e0050843be0 |
| institution | Directory Open Access Journal |
| issn | 2289-4659 2231-8380 |
| language | English |
| last_indexed | 2024-03-12T03:54:29Z |
| publishDate | 2020-09-01 |
| publisher | Universiti Malaysia Pahang Publishing |
| record_format | Article |
| series | Journal of Mechanical Engineering and Sciences |
| spelling | doaj.art-2ac924687dcc432abf481e0050843be02023-09-03T12:06:39ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802020-09-011437082709310.15282/jmes.14.3.2020.10.0555Comparison of the performance of oscillating water column devices based on arrangements of water columnsJahirwan Ut Jasron0Sudjito Soeparmani1Lilis Yuliati2Djarot B. Darmadi3Mechanical Engineering, Faculty of Science and Engineering, Universitas Nusa Cendana Kupang, IndonesiaMechanical Engineering, Faculty of Engineering, Universitas Brawijaya Malang, IndonesiaMechanical Engineering, Faculty of Engineering, Universitas Brawijaya Malang, IndonesiaMechanical Engineering, Faculty of Engineering, Universitas Brawijaya Malang, IndonesiaThe hydrodynamic performance of oscillating water column (OWC) depends on the depth of the water, the size of the water column and its arrangement, which affects the oscillation of the water surface in the column. An experimental method was conducted by testing 4 water depths with wave periods of 1-3 s. All data recorded by the sensor is then processed and presented in graphical form. The research focused on analyzing the difference in wave power absorption capabilities of the three geometric types of OWC based on arrangements of water columns. The OWC devices designed as single water column, the double water column in a series arrangement which was perpendicular to the direction of wave propagation, and double water column in which the arrangement of columns was parallel to the direction of wave propagation. This paper discussed several factors affecting the amount of power absorbed by the device. The factors are the ratio of water depth in its relation to wavelength (kh) and the inlet openings ratio (c/h) of the devices. The test results show that if the water depth increases in the range of kh 0.7 to 0.9, then the performance of the double chamber oscillating water column (DCOWC) device is better than the single chamber oscillating water column (SCOWC) device with maximum efficiency for the parallel arrangement 22,4%, series arrangement 20.8% and single column 20.7%. However, when referring to c/h, the maximum energy absorption efficiency for a single column is 27.7%, double column series arrangement is 23.2%, and double column parallel arrangement is 29.5%. Based on the results of the analysis, DCOWC devices in parallel arrangement showed the ability to absorb better wave power in a broader range of wave frequencies. The best wave of power absorption in the three testing models occurred in the wave period T = 1.3 seconds.https://journal.ump.edu.my/jmes/article/view/2845dcowcarrangements of water columnsseries arrangementparallel arrangementpower absorption |
| spellingShingle | Jahirwan Ut Jasron Sudjito Soeparmani Lilis Yuliati Djarot B. Darmadi Comparison of the performance of oscillating water column devices based on arrangements of water columns Journal of Mechanical Engineering and Sciences dcowc arrangements of water columns series arrangement parallel arrangement power absorption |
| title | Comparison of the performance of oscillating water column devices based on arrangements of water columns |
| title_full | Comparison of the performance of oscillating water column devices based on arrangements of water columns |
| title_fullStr | Comparison of the performance of oscillating water column devices based on arrangements of water columns |
| title_full_unstemmed | Comparison of the performance of oscillating water column devices based on arrangements of water columns |
| title_short | Comparison of the performance of oscillating water column devices based on arrangements of water columns |
| title_sort | comparison of the performance of oscillating water column devices based on arrangements of water columns |
| topic | dcowc arrangements of water columns series arrangement parallel arrangement power absorption |
| url | https://journal.ump.edu.my/jmes/article/view/2845 |
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