26084.波浪作用下懸沙濃度分布的理論模式研究

1、天津大學(xué)碩士學(xué)位論文波浪作用下懸沙濃度分布的理論模式研究姓名：楊艷靜申請學(xué)位級別：碩士專業(yè)：水利工程指導(dǎo)教師：白玉川201112ABSTRACTInestuarineandcoastalareas，waveisthemaindynamicfactorforsuspensionofsedimentandplaysanimportantroleinnearshoresedimenttransportTherefore，ithasimport

2、antsignificancetostudysuspendedsedimentmovementduetowaves，especiallybreakingwavesinthebreakerzone，instudyingthemechanismofcoastalsedimentmovementThispapermainlyfocusesontheverticaldistributionofsuspendedsedimentconcentra

3、tionduetowavesAccordingtothetwo—dimensionalsuspendedsedimentdiffusionequmion，byanalyzingthemainfactorsaffectingsuspendedsediment，thesuspendedsedimentdiffusioncoefficientmodelsunderthenonbreakingwavesandbreakingwavesarepr

4、esentedbasedonthehierarchicalmodelNowadays，therearemanyresearchesonthedistributionofsuspendedsedimentundernonbreakingwavesNevertheless，researchesonthesedimentsuspensionduetobreakingwavesinthebreakingzonearerelativerareBe

5、causethesandmovementinthebreakingzoneismoredifficulttodescribeandit’SinfluencedbymorecomplexdynamicconditionsgeneratedbybreakingwavesTherefore，thispapermainlyfocusedonthesuspendedsedimentconcentrationdistributionunderbre

6、akingwavesInthewaveboundarylayerusingforreferenceofeddyviscositycoefficientmodelwhichYouandWilkisonproposed，giveprominencetotheturbulenteffectsonsedimentsuspendedIntheupperwaterbodyoutsidetheboundarylayeritisprovedthatli

7、neardistributionshouldgiveabetterdescriptionoftheverticaldistributionofsuspendedsedimentwithinthebreakerzone，SOusealineardistribution，whileaddingtheimpactofwaveenergydissipation，thenthesuspendedsedimentdiffusioncoefficie

8、ntisderivedAndintheinthetransitionalwaterbodytakingintoaccounttheturbulenceshearstressandwaveflowvelocitydistributionundertheinfluenceofwaves，thesuspendedsedimentdiffusioncoefficientisgiventhroughderivationandsimplificat

9、ionMeanwhile，takingintoaccountthecontinuitybetweenthelayers，thedistributionexpressionofsuspendedsedimentconcentrationalongthedepthisestablishedFinallycomprehensiveandreasonabletheoreticalmodelsofsuspendedsedimentconcentr