復(fù)雜水域水動(dòng)力及物質(zhì)輸送數(shù)值模擬研究.pdf

1、同濟(jì)大學(xué)博士后學(xué)位論文復(fù)雜水域水動(dòng)力及物質(zhì)輸送數(shù)值模擬研究姓名：華祖林申請(qǐng)學(xué)位級(jí)別：博士后專業(yè)：環(huán)境工程指導(dǎo)教師：徐祖信劉遂慶20020701NUMERICALSIⅫ妊，ATIoN0FFLOWANDⅣ【ASSTRANSPORTATl0NINC0Ⅳ【PLEXWATERREGIONAbstractAccordingtocomplicatedflowdynamicsandbraidedchanneIinChan鰣iangestuarythec

2、urvilineargridisdistributedtosuitforthenaturallandboundaryThetwodimensionalwaterflowandmasstransportationmathematieaImodelforthewholeestuaryisestablishedinthispaperBasedonthismodeltheinfluenceofsaltwaterintrudingintoChan

3、西iangestuaryduetoTheYangtzeThteeGorgesProjectandSouthNorthWaterTransferEngineeringisforecastedandanalyzedAnumericaImodelofflowandwaterqualityintidalregionsisputtedforwardbased0ntriangularmeshOnetypicalplantrivetnetareais

4、selected，andwaterenvironmentalcapacityisealculatedunderthedifferenthydrologiealconditionnIemaincontentandconclusionisasfellowsinthispaper：(1)ThecurvilinearmeshesforwholeChangjiangestuaryisbuiItbytlleuseofPoissonequations

5、withanewexpressionofdifferentialformadjustingfactorsThetwodimensionalflowandmasstransportationmathematicaImodeIisestablishedbasedonthesecurvilineargridsforChangjiangestuary(2)OwingtoTheYangtzeThreeGorgesProjectandSouthNo

6、rthWaterTransferEngineering，theinfluenceofchangjiangestuarysaltwaterintrusionisforecastedandanalyzedbytheuseofthismodelIARerthefoundationofTheYangtzeThreeGorgesProject。theflowrateofYangtzeriverinJanuaryisincreasedduetoTh

7、reeGorgesreservoirregulation，sothattheinfluenceonsaltwaterintrudingintoChangiiangestuaryisfavorable；moreovertheflowdischargeisreducedinOctoberbuttheinfluenceisslightsincetheflowratebaseislargercomparedtothatduringdrought

8、Period。ForSouthNorthWaterTransferEngineeringtIlefreshwaterispumpedfromYangtzerivertonorthareasthentheflowrateofChangiiangriverisdecreasedTheinfluenceonsaltwaterintrudingintoChangjiangestuaryisexistedSpeciallyintheparticu

9、larlowwateryeartheinfluenceisveryseriousSomeremedialstepsmustbeadoptedtoavoidthattheseriousconditionhappens(3)Anumericalmodelofflowandwaterqualityintidalregionsbasedontriangularmeshisputtedforwardf4)BasedonireprovedPOMMo

10、del，thethreedimensionalflowandmasstransportationmathematicalmodelfortheSOUthbranchinChangjiangestuaryisestablished11他pollutedscopeofShidongkOHwastedischargeoutletissimulated(5)Selectedatypicalplainrivernetregion，theunste

11、adywaterquantityandwaterqualityregionalrivernetmodelisbuiltnlewaterenvironmentalcapacityoftheregionisgainedunderthehydrologiealconditionofdifierentstagefrequencyttisveryusefultocarryouttheregionalcontroloftotalwastedisch