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 high performance computingIsosurfaces 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.Assistant ProfessorPhD in Eng. 2018, Shinshu Univ. Specially Appointed Assistant Professor in Nagoya Univ., April 2018 –March 2019, Assistant Professor in Shinshu Univ., April 2019 –now.System Analysis for Control and Its Applications56
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