Effect of Under Connected Plates on the Hydrodynamic Efficiency of the Floating Breakwater
In this paper, the hydrodynamic efficiency of a floating breakwater system is experimentally studied by use of physical models. Regular waves with wide ranges of wave heights and periods are tested. The efficiency of the breakwater is presented as a function of the wave transmission, reflection, and...
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| Veröffentlicht in: | China ocean engineering 2014-06, Vol.28 (3), p.349-362 |
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| creator | Koraim, A. S. Rageh, O. S. |
| description | In this paper, the hydrodynamic efficiency of a floating breakwater system is experimentally studied by use of physical models. Regular waves with wide ranges of wave heights and periods are tested. The efficiency of the breakwater is presented as a function of the wave transmission, reflection, and energy dissipation coefficients. Different parameters affecting the breakwater efficiency are investigated, e.g. the number of the under connected vertical plates, the length of the mooring wire, and the wave length. It is found that, the transmission coefficient kt decreases with the increase of the relative breakwater width B/L, the number of plates n and the relative wire length l/h, while the reflection coefficient kr takes the opposite trend. Therefore, it is possible to achieve kt values smaller than 0.25 and kr values larger than 0.80 when B/L is larger than 0.25 for the case of l/h-1.5 and n=4. In addition, empirical equations used for estimating the transmission and reflection coefficients are developed by using the dimensionless analysis, regression analysis and measured data and verified by different theoretical and experimental results. |
| doi_str_mv | 10.1007/s13344-014-0028-1 |
| format | Article |
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S. ; Rageh, O. S.</creator><creatorcontrib>Koraim, A. S. ; Rageh, O. S.</creatorcontrib><description>In this paper, the hydrodynamic efficiency of a floating breakwater system is experimentally studied by use of physical models. Regular waves with wide ranges of wave heights and periods are tested. The efficiency of the breakwater is presented as a function of the wave transmission, reflection, and energy dissipation coefficients. Different parameters affecting the breakwater efficiency are investigated, e.g. the number of the under connected vertical plates, the length of the mooring wire, and the wave length. It is found that, the transmission coefficient kt decreases with the increase of the relative breakwater width B/L, the number of plates n and the relative wire length l/h, while the reflection coefficient kr takes the opposite trend. Therefore, it is possible to achieve kt values smaller than 0.25 and kr values larger than 0.80 when B/L is larger than 0.25 for the case of l/h-1.5 and n=4. In addition, empirical equations used for estimating the transmission and reflection coefficients are developed by using the dimensionless analysis, regression analysis and measured data and verified by different theoretical and experimental results.</description><identifier>ISSN: 0890-5487</identifier><identifier>EISSN: 2191-8945</identifier><identifier>DOI: 10.1007/s13344-014-0028-1</identifier><language>eng</language><publisher>Heidelberg: Chinese Ocean Engineering Society</publisher><subject>Breakwalls ; Breakwaters ; Coastal Sciences ; Engineering ; Fluid flow ; Fluid- and Aerodynamics ; Hydrodynamics ; Marine ; Marine & Freshwater Sciences ; Mathematical models ; Numerical and Computational Physics ; Oceanography ; Offshore Engineering ; Plates ; Reflection coefficient ; Simulation ; Wire ; 传输系数 ; 反射系数 ; 无量纲分析 ; 板 ; 水力效率 ; 浮动 ; 连接 ; 防波堤</subject><ispartof>China ocean engineering, 2014-06, Vol.28 (3), p.349-362</ispartof><rights>Chinese Ocean Engineering Society and Springer-Verlag Berlin Heidelberg 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-8edbedc85c41380f240c7ee96e94633e16733cc9e2be2102f4c7586072551fe03</citedby><cites>FETCH-LOGICAL-c380t-8edbedc85c41380f240c7ee96e94633e16733cc9e2be2102f4c7586072551fe03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/86654A/86654A.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s13344-014-0028-1$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s13344-014-0028-1$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Koraim, A. S.</creatorcontrib><creatorcontrib>Rageh, O. S.</creatorcontrib><title>Effect of Under Connected Plates on the Hydrodynamic Efficiency of the Floating Breakwater</title><title>China ocean engineering</title><addtitle>China Ocean Eng</addtitle><addtitle>China Ocean Engineering</addtitle><description>In this paper, the hydrodynamic efficiency of a floating breakwater system is experimentally studied by use of physical models. Regular waves with wide ranges of wave heights and periods are tested. The efficiency of the breakwater is presented as a function of the wave transmission, reflection, and energy dissipation coefficients. Different parameters affecting the breakwater efficiency are investigated, e.g. the number of the under connected vertical plates, the length of the mooring wire, and the wave length. It is found that, the transmission coefficient kt decreases with the increase of the relative breakwater width B/L, the number of plates n and the relative wire length l/h, while the reflection coefficient kr takes the opposite trend. Therefore, it is possible to achieve kt values smaller than 0.25 and kr values larger than 0.80 when B/L is larger than 0.25 for the case of l/h-1.5 and n=4. In addition, empirical equations used for estimating the transmission and reflection coefficients are developed by using the dimensionless analysis, regression analysis and measured data and verified by different theoretical and experimental results.</description><subject>Breakwalls</subject><subject>Breakwaters</subject><subject>Coastal Sciences</subject><subject>Engineering</subject><subject>Fluid flow</subject><subject>Fluid- and Aerodynamics</subject><subject>Hydrodynamics</subject><subject>Marine</subject><subject>Marine & Freshwater Sciences</subject><subject>Mathematical models</subject><subject>Numerical and Computational Physics</subject><subject>Oceanography</subject><subject>Offshore Engineering</subject><subject>Plates</subject><subject>Reflection coefficient</subject><subject>Simulation</subject><subject>Wire</subject><subject>传输系数</subject><subject>反射系数</subject><subject>无量纲分析</subject><subject>板</subject><subject>水力效率</subject><subject>浮动</subject><subject>连接</subject><subject>防波堤</subject><issn>0890-5487</issn><issn>2191-8945</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOwzAQRS0EEuXxAezMjk1gxo_EWULFS0KCBd2wsVJnUgKpDXYq1L_HVRFLWIxGmrlnruYydoJwjgDVRUIplSoAc4EwBe6wicAaC1MrvcsmYGootDLVPjtI6Q1Ao1Y4YS_XXUdu5KHjM99S5NPgfR5Qy5-GZqTEg-fjK_G7dRtDu_bNsnc8Q73rybv1Btysb4bQjL1f8KtIzftXJuMR2-uaIdHxTz9ks5vr5-ld8fB4ez-9fCicNDAWhto5tc5opzAPOqHAVUR1SbUqpSQsKymdq0nMSSCITrlKmxIqoTV2BPKQnW3vfsTwuaI02mWfHA1D4ymsksVSCWE05DP_SrVSgKJSdZbiVupiSClSZz9iv2zi2iLYTeR2G7nNkdtN5BYzI7ZMylq_oGjfwir6_Pyf0OmP0Wvwi8_M_TppAAmyLOU3F4eNpw</recordid><startdate>20140601</startdate><enddate>20140601</enddate><creator>Koraim, A. 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S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-8edbedc85c41380f240c7ee96e94633e16733cc9e2be2102f4c7586072551fe03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Breakwalls</topic><topic>Breakwaters</topic><topic>Coastal Sciences</topic><topic>Engineering</topic><topic>Fluid flow</topic><topic>Fluid- and Aerodynamics</topic><topic>Hydrodynamics</topic><topic>Marine</topic><topic>Marine & Freshwater Sciences</topic><topic>Mathematical models</topic><topic>Numerical and Computational Physics</topic><topic>Oceanography</topic><topic>Offshore Engineering</topic><topic>Plates</topic><topic>Reflection coefficient</topic><topic>Simulation</topic><topic>Wire</topic><topic>传输系数</topic><topic>反射系数</topic><topic>无量纲分析</topic><topic>板</topic><topic>水力效率</topic><topic>浮动</topic><topic>连接</topic><topic>防波堤</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Koraim, A. 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S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Under Connected Plates on the Hydrodynamic Efficiency of the Floating Breakwater</atitle><jtitle>China ocean engineering</jtitle><stitle>China Ocean Eng</stitle><addtitle>China Ocean Engineering</addtitle><date>2014-06-01</date><risdate>2014</risdate><volume>28</volume><issue>3</issue><spage>349</spage><epage>362</epage><pages>349-362</pages><issn>0890-5487</issn><eissn>2191-8945</eissn><abstract>In this paper, the hydrodynamic efficiency of a floating breakwater system is experimentally studied by use of physical models. Regular waves with wide ranges of wave heights and periods are tested. The efficiency of the breakwater is presented as a function of the wave transmission, reflection, and energy dissipation coefficients. Different parameters affecting the breakwater efficiency are investigated, e.g. the number of the under connected vertical plates, the length of the mooring wire, and the wave length. It is found that, the transmission coefficient kt decreases with the increase of the relative breakwater width B/L, the number of plates n and the relative wire length l/h, while the reflection coefficient kr takes the opposite trend. Therefore, it is possible to achieve kt values smaller than 0.25 and kr values larger than 0.80 when B/L is larger than 0.25 for the case of l/h-1.5 and n=4. In addition, empirical equations used for estimating the transmission and reflection coefficients are developed by using the dimensionless analysis, regression analysis and measured data and verified by different theoretical and experimental results.</abstract><cop>Heidelberg</cop><pub>Chinese Ocean Engineering Society</pub><doi>10.1007/s13344-014-0028-1</doi><tpages>14</tpages></addata></record> |
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| subjects | Breakwalls Breakwaters Coastal Sciences Engineering Fluid flow Fluid- and Aerodynamics Hydrodynamics Marine Marine & Freshwater Sciences Mathematical models Numerical and Computational Physics Oceanography Offshore Engineering Plates Reflection coefficient Simulation Wire 传输系数 反射系数 无量纲分析 板 水力效率 浮动 连接 防波堤 |
| title | Effect of Under Connected Plates on the Hydrodynamic Efficiency of the Floating Breakwater |
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