Write your message
Volume 16, Issue 32 (11-2020)                   Marine Engineering 2020, 16(32): 9-19 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
JalilMasir H, Fatahi R, Ghanbari Adivi E, Asadi M. Investigation on Flexible Trees Impact on Flow Pattern at the Coasts Using Physical Model. Marine Engineering 2020; 16 (32) :9-19
URL: http://marine-eng.ir/article-1-814-en.html
Investigation on Flexible Trees Impact on Flow Pattern at the Coasts Using Physical Model
Hamed JalilMasir1 , Rohallah Fatahi1 , Elham Ghanbari Adivi * 1, Mahdi Asadi1
1- Department of Water Science and Engineering, Faculty of Agriculture, Shahrekord University
Abstract:   (3335 Views)
One of the natural solutions to counteract the waves is using of coastal forest cover (Green Belt). Therefore, the focus of this study is generally to evaluate the impact of green belt on attenuation the effect of solitary waves at the presence it. Research experiments aimed at evaluating a mangrove tree effectiveness to reduce tsunami energy, by using simulated shrub structures, for two tree layouts with longitudinal intervals in transverse, different cover widths and different input wave heights. Wave-induced force to the coast and green belt was calculated by direct measurement and using an electronic force meter (load cell) mounted in front of the movable part of the flume and also the wave velocity were measured via an acoustic doppler velocity meter (ADV). The experiment results showed that the presence of green belt leads to 71.27% reducing the wave destructive force and 91.52% increasing the wave attenuation. Also, was presented the proposed equation for estimating of drag coefficient with the correlation coefficient of 0.84.
Keywords: Solitary Wave, Tsunami, Green Belt, Load Cell
Full-Text [PDF 707 kb]   (1245 Downloads)    
Type of Study: Research Paper | Subject: Environmental Study
Received: 2020/03/11 | Accepted: 2020/08/6
References
1. 1. Fathi-Moghadam, M., (1996), Momentum absorption in non-rigid, non-submerged, tall vegetation along rivers. PhD Thesis, University of Waterloo, Canada, p. 25-85.
2. Furukawa, K., Wolanski, E. and Mueller, H., (1997), Currents and sediment transport in mangrove forests. Estuarine and Coastal Shelf Science, 44(3), p. 301-310. [DOI:10.1006/ecss.1996.0120]
3. Ghanbari Adivi, E., Fathi Moghadam, M. and Sadari Nasab, M., (2015), Laboratory Study of Green Belt Effect on Reduction of Wave Force on Sloping Shore, Water and soil science journal, 25(2), p. 237-248. (In Persian)
4. Ghanbari Adivi, E. and Fathi Moghadam, M., (2015), Vegetation impact on the drag coefficient and resistance of trees against shore waves, Irrigation science and Engineering journal, 38(2), p. 103-112. (In Persian)
5. Hashemi Javan, S., (2007), Numerical Simulation of the Wave Fracture Phenomenon on Submerged Breakwater, Master thesis, Hydraulic Structures, Faculty of Civil Engineering Tehran, Tehran University of Science and Technology, 116 pages. (In Persian)
6. Hunsaker, J.C. and Rightmire, B.G., (1947), Engineering applications of mechanics, Published by Mcgraw-Hill Book Company, New York.
7. Husrin, S., Strusinska, A. and Oumeraci, H., (2012), Experimental study on tsunami attenuation by mangrove forest, Earth Planets Space Journal, Vol. 64, p. 973- 989. [DOI:10.5047/eps.2011.11.008]
8. Kathiresan, K. and Rajendran, N., (2005), Coastal mangrove forests mitigated tsunami, Estuarine, Coastal and Shelf Sciences, 67(3), p. 601-606. [DOI:10.1016/j.ecss.2005.06.022]
9. Kongko, W., (2004), Study on tsunami energy dissipation in mangrove forest, Master Thesis Report, Iwate University, Japan, 43 pages.
10. Lahijani, H., Hayeri Ardakani, A., Sharifi, A. and Naderi Nabi, A., (2010), Geochemical and Sedimentary Indices of Gorgan Gulf Sediments, Oceanography, first year, No. 1, p. 45-55. (In Persian)
11. Lashkar-ara, B., (2010), Determination of shear stress in rectangular channel using momentum and energy approaches, PhD. Thesis, Shahid Chamran university of Ahwaz, Iran, p. 52- 62. (In Persian)
12. Mohamed, A., (2008), Characterization of tsunami-like bores in support of loading on structures. M.Sc Thesis, University of Hawaii, 93 pages.
13. Morison, J.R et al., (1950), The Force Exerted by Surface Waves on Piles. American Institute of Mining & Metallurgical Engineerings, Vol. 189, P.147-154. [DOI:10.2118/950149-G]
14. Motamedi Nezhad, A. and Fathi Moghadam, M., (2016), Effect of Tall Coastal Vegetation on Reduction of Semi-broken Wave Force, Master thesis, Hydraulic Structures, Faculty of Water Science Engineering, Shahid Chamran University of Ahwaz, 161 pages. (In Persian)
15. Ratnasooriya, S.P., Samarawichrama, S.S.L., Hettiarachchi Banadara, R.P.S.S. and Tanaka, N., (2008), Mitigation of tsunami by coastal vegetation, Journal of the Institution of Engineers, Sri Lanka, p. 13-19.
16. Zarei, M., Fathi Moghadam, M. and Davoodi, L., (2016), Effect of Coastal Vegetation on Attenuation of non-Breaking Solitary Wave Force in Sloping Coast Lines, Journal of Irrigation and Water Engineering, 6(26), p. 62-77. (In Persian)
17. Zegao, Y., Xiaoyu, Y., Yuanzhao, X., Meiling, D. and Haixiang, L., (2017), Experimental wave attenuation study over flexible plants on a submerged slope, Journal Ocean Univercity, China, 16(6), p. 1009-1017. [DOI:10.1007/s11802-017-3298-4]
Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Creative Commons License
International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.