SedimentTransport-USEnvironmentalProtectionAgency沙-美國環(huán)境保護(hù)署

SedimentTransportSolidsStateVariablesEUTRO-7ModulePhytoplankton(mgC/L)Detritus(mgC/L)InorganicS(mgdw/L)TOXI-7ModuleInorganicFines(mgdw/L)Sands(mgdw/L)BioticSolids(mgdw/L)EUTRO-7SolidsKineticsDissolutionPhytoplanktonGrowthDetritusRespirationDeathPeriphytonGrowthDeathRespirationSettlingSettlingInorganicSolidsSettlingTOXI-7SolidsKineticsProductionS1-InorganicFinesS3-BioticSolidsDissolution(1-fash)(fash)NetBioticSettlingSettlingS2-SandsSettlingTOXI-7BioticSolidsKineticDataConstantsNetbioticproductionrate,gdw/m3-dayProductiontemperaturecorrectionfactorNetdetritaldissolutionrateconstant,day-1DissolutiontemperaturecorrectionfactorFractionashfreedryweightParametersProductionratespatialscalemultiplierDissolutionratespatialscalemultiplierTimeFunctionsProductionratetimescalemultiplierTOXI-7BioticSolidsKineticDataSolidsTransportProcessesTOXI-7SolidsTransportDataSystemsSimulationoption(simulate,constant,bypass)Particulatetransportfield(Solids1,Solids2,Solids3)Particledensity,gdw/mL(defaultsto2.65)Maximumconcentration,mg/L(resetto3.0e6)FlowsFlowfielduse(checkSolids1,Solids2,orSolids3)Scaleandconversionfactors(internalunits,m/sec)Flowfunction(e.g.,insertsettling,resuspension)SegmentpairsSurfacearea,m2(under“fractionofflow〞)Settlingorresuspensionvelocityversustime,m/secImplementation–SystemsDataIfunchanged,particledensitydefaultsto2.65g/mLIfunchanged,maximumconcentrationforsolidsdefaultsto3.0e+6mg/LImplementation–SegmentDataInputbenthicvolume,m3Inputbenthicdepth,mSpecifysegmenttypeMapbottomsegmentsImplementation–InitialConditionsSilts,mg/LSands,mg/LBioticSolids,mg/LImplementation–FlowFieldsPointandpress“Insert〞twiceImplementation–SettlingDatadays/secondsurfacearea,m2Settlingvelocity,m/daySolidsFlowSolidsFlowDataBedVolumeOption2g =accelerationofgravity =981cm/sec2m =absoluteviscosityofwater =0.01poise(g/cm2-sec)at20oCdp =particlediameter,mm finesand =0.05–0.2 silt =0.002–0.05 clay =0.001–0.002 aD=probabilityofdepositionuponcontactwithbedSettling&DepositionVelocitiesStokesSettlingVelocities,m/dayParticleDiameter,mmParticleDensity,g/cm31.82.02.52.7FineSand0.23804707108000.0594120180200Silt0.05941201802000.02151928320.013.84.77.18.00.0050.941.21.82.00.0020.150.190.280.32Clay0.0020.150.190.280.320.0010.040.050.070.08StreamSedimentationRegimesBenthicParameterEquationsBenthicParameterValuesn

D

B%water0.12.432.531040.22.162.361090.31.892.191160.41.622.021250.51.351.851370.61.081.681560.70.811.511860.80.541.342480.90.271.174330.950.1351.0858040.990.0271.0173767PondSolidsExample-

ExternalParametersSurfaceWaterDepth,1mSurfaceArea,104m2SurfaceSediment,2cmSubsurfaceSediment,5cmWater,104m3/daySilt,60

kg/daySand,40

kg/dayInflowPondSolidsExample–

InternalParametersPOMDissolution,0.004

day-1InternalBioticProduction,2

g/m3-daySand,1.0g/mL,SiltandPOM,0g/mLTSS(SiltandPOM)Sand,1.5g/mL,SiltandPOM,0g/mLDeposition,0.5m/dayResuspension,0.