Engineering-Research-Activity2016｜SHINSHU UNIV.

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0.2mmYoshidaLabOurmainresearchinterestiscomputationalfluiddynamics.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 GraduationEnvironmental Science &TechnologyHayashi LabTheHayashigroup,incollaborationwithTeshima,Zettsu,andWagatagroups,hasresearchedfabricationoffunctionalinorganiccrystalsbyutilizingvarioustechniquesincludingfluxgrowthmethod,andsolvothermalandammnothermalmethods.Especially,ourresearchfocusesonrecoveryofusefulresourcesandremovaloftoxicionsfromaqueoussolutionsusinginorganicionexchangers.Wearealwaysinterestedinfundamentalissuesandproblemsinthefieldsofenergyandenvironmentalscience.Ourtargetistodevelopfunctionalmaterialsrangingfromnanosheetstosinglecrystalsandtoapplytoionsieves,electrodes,andquantumcomputerdevices.Researchissuesareselectiveuptakeoflithiumionfromlakeandseawater,removalofradioactiveandtoxicmetalionsfromwastes,andevaluationofnuclearspinpropertyof19F-dopedapatite.Wemakeainternationalteamtopursuesuchfieldsofstudy.FumitakaHayashiAssistant ProfessorHe completed doctoral degree in Tokyo Institute of Technology, and started to work as an assistant professor in ShinshuUniv. in 2015. (Top) Crystal structures of inorganic ion exchangers with 1-, 2-, and 3-dimensional nanostructures. (Bottom) FE-SEM images of K2TiSi3O9, Na2Ti3O7, and LiMn2O4.Aqua-Innovative Materials for Resource Recovery and Environmental PurificationPhotographs of (Left) UV/Vis Raman spectroscopy instruments and (Right) Hall measurement system. Students can master various kinds of characterization techniques.Ourteamisequippedwithvariouscharacterizationsinstruments(seerightfigure),andourgroupmemberswillhaveexcellentopportunitiesformasteringnewexperimentalskills.Graduateswillplayanactiveroleasresearchers/engineersinvariousfieldsrelevanttoenvironmentalpurification,energyconversion,andelectronics.Environmental Science &TechnologyIn the FutureAfter Graduation65

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