Archivio Istituzionale della RicercaMixingofinertialpointparticlesinaturbulentchannelflowatRe𝜏=950isinvestigatedbymeansofdirect numericalsimulations.Weconsiderinertialparticles,atvaryingStokesnumber,releasedfrompairsofsources locatedatdifferentpositionsinsidethechannelandanalyzetherateatwhichparticlescomeintoclose proximitytoeachother.Todoso,weemployaLagrangianframework,whichissuitablefortheanalysis oftrajectoriesandingeneralforthestudyofmixinganddispersionproblems.Byvaryingthereleaseposition ofparticlesalongthewall-normaldirectionweobtainathoroughdescriptionofmixinginananisotropic turbulentflow.Moreover,weanalyzetheeffectsofparticleinertiaandshowthatthesearenotunivocalbut alsodependonthepositionandalignmentofthesources,owinginparticulartothedependenceoftheflow timescalesonthedistancefromthewall.
Investigating the magnitude and temporal localization of inertial particle mixing in turbulent channel flows / Perrone, Davide; Kuerten, J. G. M.; Ridolfi, Luca; Scarsoglio, Stefania. - In: INTERNATIONAL JOURNAL OF MULTIPHASE FLOW. - ISSN 0301-9322. - 165:(2023), p. 104489. [10.1016/j.ijmultiphaseflow.2023.104489]
Investigating the magnitude and temporal localization of inertial particle mixing in turbulent channel flows
Davide Perrone;Luca Ridolfi;Stefania Scarsoglio
2023
Abstract
MixingofinertialpointparticlesinaturbulentchannelflowatRe𝜏=950isinvestigatedbymeansofdirect numericalsimulations.Weconsiderinertialparticles,atvaryingStokesnumber,releasedfrompairsofsources locatedatdifferentpositionsinsidethechannelandanalyzetherateatwhichparticlescomeintoclose proximitytoeachother.Todoso,weemployaLagrangianframework,whichissuitablefortheanalysis oftrajectoriesandingeneralforthestudyofmixinganddispersionproblems.Byvaryingthereleaseposition ofparticlesalongthewall-normaldirectionweobtainathoroughdescriptionofmixinginananisotropic turbulentflow.Moreover,weanalyzetheeffectsofparticleinertiaandshowthatthesearenotunivocalbut alsodependonthepositionandalignmentofthesources,owinginparticulartothedependenceoftheflow timescalesonthedistancefromthewall.
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https://hdl.handle.net/11583/2978526