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1.
Nomenclatureαj:phasejvolumefraction;uj:phasejvelocityvector;U :meanvelocityvector;U :meanaxialvelocity;Uo:meanx_axialvelocityoftheexit;U∞ :velocityofjettingdevice;ΔU :jumpingvelocityofmovingjet,characteristicvelocityofflow_field ,ΔU =Uo-U∞ ;p:pressure;P :eigenpres… 相似文献
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Nomenclature αs:particlevolumefraction; ug:gasinstantaneousvelocityvector; us:particleinstantaneousvelocityvector; U :meanaxialvelocityoftwo_phasejet; U0 :x_axialvelocityoftheexit,characteristicve locityofflow_field; p:instantaneousflow_fieldpressure; p:mean… 相似文献
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IntroductionItiswell_knownthatthebasiccharacteristicsofnonlinearintegralequationofVolterratypearefundamentallydifferentfromthatofHammersteintype:Hammersteinintegralequationhasafixedupperlimitofintegration.Thismeansthatasolutionmustalwaysbedefinedovere… 相似文献
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IntroductionShallowwaterflowexistsverywidelyinhydraulicengineering .Pollutantdiffusionthatismainlycontrolledbytheshallowwaterflowhasbroughtincreasinglyattentioninenvironmentalengineering.Thetwo_dimensionalmodelfordescribingtheflowcharacteristicshasbee… 相似文献
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IntroductionDuetotheintrinsiccouplingcharacteristicsbetweenelectricandelasticbehaviors,thatis,appliedmechanicalloadingproduceselasticdeformation ,aswellaselectricfield ,andconverselyelectricfieldcangiverisetoelasticdeformation ,piezoelectricmaterialshave… 相似文献
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IntroductionTheflowtheoryanditsapplicationoffluidsflowinafractalreservoirhavecontinuallygonedeepintostudysinceChangandYortsos[1]builttheflowmodeloffluidthroughafractalreservoir.TONGDeng_ke[2 ]presentedtheexactsolutionanditspressurecharacteristicsfortheva… 相似文献
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IntroductionTurbulentflowisanonlinearstochasticprocessandoneofitsbasiccharacteristicsislargereffectivetransportcapabilitythanthatoflaminarflow .Ingeneral,transportinfluidsisgradient,i.e.momentum ,energyaretransportedfromthehighervalueregiontothelowervalu… 相似文献
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CHAOS-REGULARIZATION HYBRID ALGORITHM FOR NONLINEAR TWO-DIMENSIONAL INVERSE HEAT CONDUCTION PROBLEM 总被引:2,自引:0,他引:2
IntroductionAsakindofimportantthermalcharacteristicsofthematerial,thermalconductivitymustbedeterminedtomakequantificationalanalysisoftemperaturefield .Ithasbeentakendueattentiontoestimatethethermalconductivityfrominnerand/orboundarytemperaturemeasureme… 相似文献
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Asweknow,itisthecharacteristicoftheflexiblemultibodysystemthattherigidmotioniscoupledwiththeflexibledeformation[1~3].Therefore,fortheflexiblemultibodysystrm,itisnecessarytoinvestigatetheregularofthedestabilizationandbifurcationofitsconfigurationbefor… 相似文献
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Analytical solution of radiation sound pressure of double cylindrical shells in fluid medium 总被引:6,自引:0,他引:6
IntroductionSoundradiationfromthedoubleshellswhicharethemainstructureofsubmarinehullsunderexcitationinfluidmediumisveryimportantforstudyingthesubmarinehidingtechnology .Forthevibrationcharacteristicofdoubleconcentricshells,ithasbeenstudiedontheoryande… 相似文献
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Afundamentalcharacteristicofplasmasistheir,abilitytosmearoutelectricfields.ThisisatypicalnonlinearproblemofsolvingthePoissonequation.Thepreviousstudyofthenonlinearproblemisusuallybasedonalinearizedmethodwhenthepotentialenergyoftheparticlesismuchsmalle… 相似文献
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IntroductionThetransientphenomenaofdynamicproblemsandthemannerstotreatthemaregenerallyrelatedtothespectralcharacteristicsofexcitation .Onemayomitpropagatingwavesifrelativelylowerfrequenciesgoverntheresponsesintheproblemssuchasseismicresponsesandrespon… 相似文献
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IntroductionInearthquakeengineering ,itisimportantfordesignerstostudytheeffectsofsurfacetopographyoncharacteristicsofstrongearthquakemotion .Manystudiesonthissubjecthavebeencarriedoutinthepasttwentyyears.Trifunac[1]gottheseriessolutiontoscatteringofplane… 相似文献
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Double method of characteristics to analyze hydraulic-thermal transients of pipeline flow 总被引:1,自引:0,他引:1
IntroductionMethodofcharacteristics (MOC)hasstillbeenthepowerfultooltoanalyzehydraulictransientofpipelineflowsincethe 1 960s.Seldomhasthethermaltransientbeentakenintoaccount.Heatduetofrictionvarieswhenflowratechangedbecauseofvariouskindsofreasons,whichcaus… 相似文献
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Research on the effect of cylinder particles on the turbulent properties in particulate flows 总被引:6,自引:0,他引:6
IntroductionThetwo_phaseflowwithcylinderparticlesisadifficultmatterintheoreticalresearchofmultiphaseflowandnon_Newtonianflow ,soitisacademicallyvaluabletostudyit.Meanwhile ,suchflowshaveabroadbackgroundinindustry .Inthematerialscience,themoldingandproces… 相似文献
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IntroductionRecently ,theferroelectricceramicshassuchexcellentcharacteristicsofpiezoelectricityandpyroelectricityetc .thatitbecomesoneofthemostimportantfunctionalmaterials.Forinstance ,thewidelyappliedsensors,transducersandactuatorsetc .aremadeoftheferroe… 相似文献
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IntroductionConsiderthesystemofpartialdifferentialalgebraicequations (PDAEs) :Σ : Pi(y1,y2 ,… ,yn) =0 (i =1,2 ,… ,r) ,wherethecoefficientsareinthedifferentialfieldKwithcharacteristiczero .TheimportantquestionishowtosolvethisPDAEsinthetheoryofpartialdifferentialequa… 相似文献
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IntroductionDynamicstabilityanalysisofviscoelasticstructuresismuchmorecomplicatedsincethemathematicalmodelturnsouttobeasystemofintegro_partial_differentialequations,ratherthanasystemofpartialdifferentialonesasintheelasticstructure[1].Manyworkshavebeenp… 相似文献
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IntroductionBellows,ashellofwrinkledmeridianofrevolution ,hasbeingincreasinglyusedinmodernequipmentasanelastic_sensitiveelementandaflexiblejoint.Theformerisusuallysubjectedtolargedisplacementsatitsends,andthelattermaypartlyenterintoplasticstate .Hence ,b… 相似文献