江蘇近海二維潮流及石油類污染物的數(shù)值模擬.pdf

1、河海大學碩士學位論文江蘇近海二維潮流及石油類污染物的數(shù)值模擬姓名：俞琨申請學位級別：碩士專業(yè)：港口海岸及近海工程指導教師：宋志堯20070301摘要AbstractWithhumanbeing’Sawarenessofthegreatpotentialofthemarineresources，theyexploreandusethemalq／鹼resou“；esmoreandⅡlofeTheirpursuitofshorttermeco

2、nomicbenefitandlackingofscientifictheory’sdirectionresultedintheseriousdestructionofthemarineenvironmentSO也eresearchandeontrolofoffshoreenvironmenthasalreaxlybecomeoneoftheimportantsubjectsnowadaysIntheseoffshoreareas，ti

3、deisoneofmainwaterdynamicconditionsItisalsothemostbasicmovingmediumoftheseair@asThetransportationprocessoftheothersubstanceslikesedimentsalinityvariouskindsofpollutantsandheala】lmovewithtideDuringtheresearchofoffshorepro

4、jectanditsenvironmentproblemWemusthaveadetailedunderstandingofthetidefieldfirstThenumericalsimulationprovidesBS鋤effectivemethodforunderstandingthetidefield，Themaintasksofthisessayare：1Establishatwodimensionalwaterdynamic

5、andpollutants’diffusionandtransportationnumericalmodelofmeandeepness2MakeanBmericalsimulationofthetidefieldandconcentrationfieldoftheactualOCeanspace(1)Makethetwodimensionalshallowwaterwaveequationofmeandeepnessasthegove

6、rningequationandconvertitintostreammotionequationoftheorthogonalc111wecoordinatesystemUsetheagainst—the—windDSImethodoffinitedifferencetodispersethestreammotionequation0ntheinterlaced鰣dandestablishatwodimensionaltidennme

7、ricalmodelTheboundaryconditionsofthemodelwillbeprovidedbyEastChinaSeaModelcalculationandthetidalstation(providestheactualmeasurementinformation)WemakeasimulationofthetideandwavemotionoftheoceanspacebetweenJiangsuoffshore

8、andmainchannelbythismodel，andcomparetheactualmeasurementinformationwimtheresultofthesimulationtoverifythismodel’Sratiortality(2)Tideresidualcurrentisapersistentresidualcurrentwhichcausedbythenonlinearfunctionduringthemot