摘要
Two-dimensionalhydrodynamicsimulationfortheYangtzeEstuaryisperformedbyusingtheDelft3Dmodeladoptingtheshallowwaterequationsandthefinitevolumemethodonacurvilinearbody-fittedgrid.Themodeliscalibratedandvalidatedusingavailabletidaldataandfieldmeasurements.Thevelocityvectorfields,thetidallevels,thetrajectoriesofdroguesandthefarfieldsewagedilutionfromtheexistingandproposedoutfallsarestudiedforthespring/neaptideandthedry/wetseason.Theresultsshowthatthetidalcurrentsandtherunoffflowareabletodiluteanddispersethesewagefromtheoutfallstotheoutersea.ThesewagedilutioncontoursundervarioushydrodynamicconditionsindicatethatthedischargedeffluentatpresenthaverelativelyminorimpactonthewaterenvironmentoftheYangtzeEstuary;whereastheplannedsewageplanwouldsignificantlydeterioratethewaterqualityoftheestuaryintheabsenceofanytreatment,especiallyduringtheneaptideofdryseason.ThedroguetrackingshowsthattheeffluentfromthefourouffallswillbetransporteddownstreamtotheHangzhouBay.Astudyonthepollutionduetotheprojectandtheself-purificationcapacityofHangzhouBayisproposedinadditiontothatoftheYangtzeEstuary.
出版日期
2002年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)