The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves
Extreme coastal events require careful prediction of wave forces. Recent tsunamis have resulted in extensive damage of coastal structures. Such scenarios are the result of the action of long waves on structures. In this paper, the efficiency of vegetation as a buffer system in attenuating the incide...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/97842 http://hdl.handle.net/10220/18154 |
| _version_ | 1811689794034466816 |
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| author | Lakshmanan, Noarayanan Kantharaj, Murali Sundar, Vallam |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Lakshmanan, Noarayanan Kantharaj, Murali Sundar, Vallam |
| author_sort | Lakshmanan, Noarayanan |
| collection | NTU |
| description | Extreme coastal events require careful prediction of wave forces. Recent tsunamis have resulted in extensive damage of coastal structures. Such scenarios are the result of the action of long waves on structures. In this paper, the efficiency of vegetation as a buffer system in attenuating the incident ocean waves was studied through a well controlled experimental program. The study focused on the measurement of forces resulting from cnoidal waves on a model building mounted over a slope in the presence and absence of vegetation. The vegetative parameters, along with the width of the green belt, its position from the reference line, the diameter of the individual stems as well as the spacing between them, and their rigidity are varied so as to obtain a holistic view of the wave-vegetation interaction problem. The effect of vegetation on variations of dimensional forces with a Keulegan-Carpenter number (KC) was discussed in this paper. It has been shown that when vegetal patches are present in front of structure, the forces could be limited to within F*≤1, by a percentile of 92%, 90%, 55%, and 96%, respectively for gap ratios of 0.0, 0.5, 1.0, and 1.5. The force is at its maximum for the gap ratio of 1.0 and beyond which the forces start to diminish. |
| first_indexed | 2024-10-01T05:53:45Z |
| format | Journal Article |
| id | ntu-10356/97842 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:53:45Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/978422020-03-07T11:43:42Z The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves Lakshmanan, Noarayanan Kantharaj, Murali Sundar, Vallam School of Civil and Environmental Engineering DRNTU::Engineering::Maritime studies::Maritime science and technology Extreme coastal events require careful prediction of wave forces. Recent tsunamis have resulted in extensive damage of coastal structures. Such scenarios are the result of the action of long waves on structures. In this paper, the efficiency of vegetation as a buffer system in attenuating the incident ocean waves was studied through a well controlled experimental program. The study focused on the measurement of forces resulting from cnoidal waves on a model building mounted over a slope in the presence and absence of vegetation. The vegetative parameters, along with the width of the green belt, its position from the reference line, the diameter of the individual stems as well as the spacing between them, and their rigidity are varied so as to obtain a holistic view of the wave-vegetation interaction problem. The effect of vegetation on variations of dimensional forces with a Keulegan-Carpenter number (KC) was discussed in this paper. It has been shown that when vegetal patches are present in front of structure, the forces could be limited to within F*≤1, by a percentile of 92%, 90%, 55%, and 96%, respectively for gap ratios of 0.0, 0.5, 1.0, and 1.5. The force is at its maximum for the gap ratio of 1.0 and beyond which the forces start to diminish. 2013-12-06T08:00:12Z 2019-12-06T19:47:17Z 2013-12-06T08:00:12Z 2019-12-06T19:47:17Z 2012 2012 Journal Article Lakshmanan, N., Kantharaj, M., & Sundar, V. (2012). The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves. Journal of marine science and application, 11(1), 24-33. https://hdl.handle.net/10356/97842 http://hdl.handle.net/10220/18154 10.1007/s11804-012-1102-9 en Journal of marine science and application |
| spellingShingle | DRNTU::Engineering::Maritime studies::Maritime science and technology Lakshmanan, Noarayanan Kantharaj, Murali Sundar, Vallam The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves |
| title | The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves |
| title_full | The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves |
| title_fullStr | The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves |
| title_full_unstemmed | The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves |
| title_short | The effects of flexible vegetation on forces with a Keulegan-Carpenter number in relation to structures due to long waves |
| title_sort | effects of flexible vegetation on forces with a keulegan carpenter number in relation to structures due to long waves |
| topic | DRNTU::Engineering::Maritime studies::Maritime science and technology |
| url | https://hdl.handle.net/10356/97842 http://hdl.handle.net/10220/18154 |
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