工学部_研究紹介_2020_英語版
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0.2mmTakashi YoshidaOurmainresearchinterestiscomputationalfluiddynamics.Currentresearchprojectsare:directnumericalsimulationsofflowsoveranopencavity,includingstudiesoftheeffectsofcavityaspectratioonself-sustainedoscillationsofseparatedshearlayerandrecirculatingvorticesinthecavity;activecontrolofcavityflow;directnumericalsimulationsofjet–edgesystem;directandlargeeddysimulationsoftwo-dimensionalturbulentjets.TheNavier-Stokesequations,thatarethemomentumequationsofflow,arenonliniear.Thussolvingtheseequationsisverydifficult.NumericalsolutionsoftheNavier-Stokesequationsforcomplexflowscanbeobtainedfromnumericalsimulationsusingsupercomputers.Wecaninvestigatethemechanismofcomplexflowusingadvancedsupercomputers.AssociateProfessorPhD 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 EngineeringIn the FutureAfter GraduationMechanical Systems EngineeringMasaya TanemuraTorsional vibration systemFlexible structure systemControltheoryisappliedtomanyareas,forexample,mechanicalsystems,electricsystems,andeconomicsystems.Especially,westudycontrolmethodsformechanicalsystems,suchas,torsionalvibrationsystem,andflexiblestructuresystem.Itisnecessarytoanalyzethosesystemstocontrolthem.Inourlaboratory,analysismethodsbasedoninput-outputdataofsystemsaredeveloped.Recently,techniquesofbigdataanalyticsareattractingourattentionandhavebeendeveloped.Therefore,ourmethodswouldbeusedmoreextensivelyinthebigdataera.Controltheoryisusedinmanyareas,forexample,mechanicalsystems,electricsystems,andeconomicsystems.Therefore,thecontributiononcontroltheoryisuseful.Especially,analysismethodsbasedondataareimportantandwillbecomenewmethodswiththedevelopmentoftechniquesofmachinelearningorAI.Inourlaboratory,studentslearnthebasicsofcontroltheory.Automaticcontrolisusedinmanyindustrialfieldsandsoisanessentialtool.Studentsacquiringcontroltechniqueswillsucceedasengineers.AssistantProfessorPhDinEng.2018,ShinshuUniv.SpeciallyAppointedAssistantProfessorinNagoyaUniv.,April2018–March2019,AssistantProfessorinShinshuUniv.,April2019–now.System Analysis for Control and Its Applications60

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