河流中化學(xué)污染的擴散及其數(shù)值仿真的研究.pdf

1、重慶大學(xué)碩士學(xué)位論文河流中化學(xué)污染的擴散及其數(shù)值仿真的研究姓名：陳紅申請學(xué)位級別：碩士專業(yè)：物理化學(xué)指導(dǎo)教師：劉信安2001.6.1重慶大學(xué)碩士學(xué)位論文ABSTRACTAbstractWaterqualitymathematicalmodelsareformulationsthatrepresenttransferringandtransforminglawsofpollutionalongwithtimeandspaceinthewa

2、terbodyTheyareimportanttoolsandtheoreticalfundamentsoftheresearchonwaterenvironmentAndtheyplayanvitalroleinsuchfieldsasdescribingthetransferringandtransforminglawsofpollution，predictingwaterqualityandSOonThemainbasesofbu

3、ildingwaterqualitymodelsincludesuchknowledgeasmassbalance，diffusingandtransferringlawsofpollution，somemechanismsofpollutionph3，SiCSchemistryhydrologyhydraulicsandetcThecorrectbuildingoffiverwaterqualitymodelsdependsonthe

4、understandingoftransferringandtransformingprocessesofpollutioninriversandquantitativeexpressingabilityoftheseprocessesAndthepreviousprocessesarephysical，chemicalandbiologicalunitedonesTheyarecorrelatednotonlywiththeinher

5、entpropertiesofpollution，butalSOwithexternalhydraulics，hydrology，physics，chemistrybiologyecologyclimateandotherfactorsTheresearchonchemicalpollutioninthewaterbodyincludessurveyingandpredictingtheconcentrationofpollutiona

6、ndpreventingandcuringpollutionAccordingtothediffusingdistributionlawsandtransferringandtransforminglawsofchemicalpollutioninariversystem，thispaperuseswaterqualitymodelstopredictthedi髓sionanddistributingstatesoftheconcent

7、rationofchemicalpollutioninrivers，ThepaperpromptsabettermodelofnonpointsourcewhenthefluxofnonpointsourceisnotallowedtobeomittedItincreasesthedifficultyofcomputation，butcontributestobuildamoreperfectmodelThepaperdiscusses

8、thecontaminatedstripofinstantaneouspointsourceItcontfibutestoSUchaspectsastheevaluationofenvl’ronmentalinfluence，somesuddenaccidentsandSOonAnal)，ticalsolutionscan’tbegotfrommostofwaterqualitymodels，SOweresorttonumericalm

9、ethodsThepaperpromptsabetternumericalmethodItprovesthatthebettermethodismoreprecisethantheoldonethroughthecompareThcestimationofparametersisoneofthecoreworksofbuildingwaterqualitymodelsAslongastheinitialvaluesareproperwe