开孔板消能潜堤水动力特性的分析

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1、StudyonthehydrodynamicperformanceofasubmergedperforatedwallbreakwaterabstractBreakwatersareusedtoprotectcoastlines,coastalstructureandharborbasin.Traditionalbreakwatersaresurface-piercingandthenaffecttothecoastallandscape.Submergedbreakwaterscanreflectan

2、ddissipatetheenergyofincidentwavesandthenreducethedamageofstructuresandshorelineswithoutaffectingthecoastallandscape.Nowbreakwatersaremakingtowarddevelopedaspermeablebreakwatersandmulti-functionalbreakwaters,suchashorizontalplatebreakwaters,perforatedcai

3、ssonsandsemi-circularperforatedbreakwaters.Onthebasisoftraditionalperforatedcaissons,wepresentanewsubmergedperforatedwallbreakwaterwithbetterwave-absorbingperformance.Thisworkstudiesthehydrodynamicperformanceofsubmergedperforatedwallbreakwaterbyphysicalm

4、odeltestandtheoreticalanalysis.Thereflectioncoefficient,transmissioncoefficientandwaveforcesactingonthebreakwaterareexamined.Experimentaltestswereconductedinawave-currentflumeofShandongProvincialKeyLaboratoryofOceanEngineering.Theeffectsofrelativechamber

5、widthB/L,relativewaterdepthd/L,porosityoffrontplateandrelativewaveheightH/donthereflectionandtransmissioncoefficientsareexaminedbasedontheexperimentaldata.Ananalyticalsolutionofwaveinteractionwiththeperforatedwallbreakwaterisdevelopedbasedonthematchedei

6、genfunctionexpansions.Thereflectionandtransmissioncoefficientsandwaveforcesareexamined.Theanalyticalresultsforthereflectionandtransmissioncoefficientsarethesameaspreviousanalyticalandnumericalresultsandagreewellwithexperimentaldata.Theoptimumparametersfo

7、rthesubmergedperforatedwallbreakwaterare:d/h=0.1–0.2,B/L=0.3–0.4,ε=0.1–0.2.Atthistime,thebreakwaterhasbetterwaveabsorbingperformancewithlowreflectionandtransmissioncoefficientsandlowwaveforce.Efficientsheltercanbeprovidedforleesideregionsandthescourinfro

8、ntofthestructureissuppressed.Theseareofsignificantinpractice.Keyword:Submergedperforatedwallbreakwater;Reflectioncoefficient;Transmissioncoefficient;Waveforce;AnalyticalSolution目录1、绪论.......................................