■工学部_研究紹介_2017_英語版ファイル161220

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NiuLabWehavebeenconductingresearchesonthevariouscorrosionmechanismsandthepreventionsoftheboilerequipmentmaterialsandthesteamturbinematerialsforthermalandgeothermalpowerplants.Wealsoresearchonthecreepstrengthsandfracturesofthehigh-pressuresteamturbinerotormaterialsforthermalpowerplantsforlong-termservicesathighertemperatures.Contributetothesafetyimprovementofpowergenerationsandtheeffectiveutilizationofgeothermalenergy.Asengineersandscientistsinthefuturewepersistinstudy,experiment,analysis,calculationanddiscussionsinthelaboratory,aswellaspresentationsinacademicmeetings,toacquirepracticalabilityandknowledgeonengineeringmaterials.Dr. Li-Bin NiuAssociate ProfessorHis academic researches span the strengths and fractures of engineering materials.ImprovingtheReliabilityofPowerPlantMaterialsManyofourgraduatesareactiveinthefieldofresearchanddevelopment,designandproductionmanagementintherelatedcompaniesofmaterial,machinery,automobile,powerandelectricalmachinery.0.5mm0.2mmAnalyzing the passive films formed on the boiler tube steels in the simulated boiler feed-water of thermal power plants with XPS.Creep cracks generated near notch-root of a turbine rotor steel and the distributions of mean stress calculated by FEM.A pit formed on the specimen surface of a turbine blade steel.In the FutureAfter GraduationMechanical Systems EngineeringYoshidaLabOurmainresearchinterestiscomputationalfluiddynamics.Currentresearchprojectsare:directnumericalsimulationsofflowsoveranopencavity,includingstudiesoftheeffectsofcavityaspectratioonself-sustainedoscillationsofseparatedshearlayerandrecirculatingvorticesinthecavity;activecontrolofcavityflow;directnumericalsimulationsofjet–edgesystem;directandlargeeddysimulationsoftwo-dimensionalturbulentjets.TheNavier-Stokesequations,thatarethemomentumequationsofflow,arenonliniear.Thussolvingtheseequationsisverydifficult.NumericalsolutionsoftheNavier-Stokesequationsforcomplexflowscanbeobtainedfromnumericalsimulationsusingsupercomputers.Wecaninvestigatethemechanismofcomplexflowusingadvancedsupercomputers.Takashi YoshidaAssociateProfessorPhD Engineering 1995, Nagoya University.Faculty: Nagoya University, 1994-1997.Faculty: Shinshu University, 1997-Isosurfaces of vorticity in flow over cavity. The left figure shows an uncontrolled flow and the right figure shows a controlled flow. Numerical Simulations of Flows using a SupercomputerIsosurfaces of vorticity ina two-dimensional turbulent jet.Numericalsimulationhasbeenausefultoolforengineeringdesignandanalysis.Alumnusfromourlaboratoryareworkingasmechanicalengineers,mechanicaldesigners,softwaredesigners,systemengineers,etc.In the FutureAfter GraduationMechanical Systems Engineering59

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