Experimental investigating on the reflected waves from the caisson-type vertical porous seawalls
| العنوان: | Experimental investigating on the reflected waves from the caisson-type vertical porous seawalls |
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| المؤلفون: | Ali Karami khaniki, Mehdi Esmaeili, Maryam Rahbani |
| المصدر: | Acta Oceanologica Sinica. 38:117-123 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Physical model, 010504 meteorology & atmospheric sciences, Plane (geometry), Vertical plane, Mechanics, Aquatic Science, 010502 geochemistry & geophysics, Oceanography, 01 natural sciences, Seawall, Reflection (physics), Caisson, Reflection coefficient, Porosity, Geology, 0105 earth and related environmental sciences |
| الوصف: | The hydrodynamic efficiencies of caisson-type vertical porous seawalls used for protecting coastal areas were calculated in this study. Physical models were developed to compare the wave reflection from vertical plane, semi-porous, and porous seawalls caused by both regular and random waves. Tests were carried out for a wide range of wave heights, wave periods, and different water depths (d=0.165, 0.270 and 0.375 m). The performance regarding the reflected waves from porous and semi-porous seawalls showed improvement when compared with those from the plane seawall. The reflection coefficients of the porous and semi-porous seawalls were calculated as 0.6 and 0.75, respectively, while the coefficient for the fully reflecting plane vertical wall was significantly higher (0.9). It was also observed that the reflection coefficient decreases with increase in wave steepness and relative water depth. In addition, the reduction in the reflection coefficient of porous and semi-porous seawalls, as compared to that of a plane seawall, was observed for both regular and random waves. New equations were also proposed to calculate the reflection coefficient of different types of seawalls with the aid of laboratory experiments. By verifying the developed equations using some other experimental data, it was validated that the equations could be used for practical situations. The results of the present study can be applied to optimize the design of vertical seawalls and for coastal protecting schemes. |
| تدمد: | 1869-1099 0253-505X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::e750db790d454b5bcea2cdd8ac225ccf https://doi.org/10.1007/s13131-019-1386-6 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........e750db790d454b5bcea2cdd8ac225ccf |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18691099 0253505X |
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