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dc.contributor.authorRahman, Mustafa M.
dc.contributor.authorSamtaney, Ravi
dc.date.accessioned2020-11-09T13:53:56Z
dc.date.available2020-11-09T13:53:56Z
dc.date.issued2020-10-12
dc.identifier.citationRahman, M. M., & Samtaney, R. (2020). Particle Concentration Variation for Inflow Profiles in High Reynolds Number Turbulent Boundary Layer. Volume 2: Fluid Mechanics; Multiphase Flows. doi:10.1115/fedsm2020-20293
dc.identifier.isbn9780791883723
dc.identifier.issn0888-8116
dc.identifier.doi10.1115/FEDSM2020-20293
dc.identifier.urihttp://hdl.handle.net/10754/665881
dc.description.abstractLarge-eddy simulations (LES) of incompressible turbulent boundary-layer flows can simulate a fundamental unsteady turbulent flow, including time-variant streamwise and wall-normal velocity as well as the near-wall locations of significant turbulence intensities. A typical illustration of turbulent flows with such high Reynolds numbers can be roughly approximated to atmospheric boundary-layer flows. To bypass the demanding mesh criteria of near-ground field and direct numerical simulations, we adopt a virtual-wall model with a stretched-vortex subgrid-scale model. We simulate the dynamics of solid particles in this wall-modeled LES approach toward incompressible flow. The particles considered are both charged and uncharged, and have a fixed concentration profile with no fluctuations at the inflow. An extended streamwise simulation domain is implemented as an alternative to rerunning the simulation with a turbulent inflow profile from the simulation of the previous downstream profile. By extending the streamwise domain, the fluctuation dynamics of the particles reach a steady state far downstream from the inflow. The streamwise and altitude variation of the particle parameters are compared for various particle-concentration inflow profiles. Furthermore, an estimate of the streamwise variation of parameters is also observed. This study is the first step towards enhancing our understanding of the particle dynamics in turbulent flows.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) through the KAUST Office of Competitive Research Funds (OCRF) under Award No. URF/1/1704-01-01 and KAUST baseline research fund BAS/1/1349-01-1. The Cray XC40 Shaheen II at KAUST was utilized for the simulations. Some of the results documented here were also presented at the ASME AJKFLUIDS 2019 [15].
dc.publisherASME International
dc.relation.urlhttps://asmedigitalcollection.asme.org/FEDSM/proceedings/FEDSM2020/83723/Virtual,%20Online/1088091
dc.rightsArchived with thanks to American Society of Mechanical Engineers
dc.titleParticle concentration variation for inflow profiles in high reynolds number turbulent boundary layer
dc.typeConference Paper
dc.contributor.departmentFluid and Plasma Simulation Group (FPS)
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.conference.date2020-07-13 to 2020-07-15
dc.conference.nameASME 2020 Fluids Engineering Division Summer Meeting, FEDSM 2020, collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels
dc.conference.locationVirtual, Online
dc.eprint.versionPost-print
dc.identifier.volume2
kaust.personRahman, Mustafa M.
kaust.personSamtaney, Ravi
kaust.grant.numberURF/1/1704-01-01
dc.identifier.eid2-s2.0-85094648780
kaust.acknowledged.supportUnitCray XC40 Shaheen II
kaust.acknowledged.supportUnitKAUST baseline research
kaust.acknowledged.supportUnitOffice of Competitive Research Funds (OCRF)
dc.date.published-online2020-10-12
dc.date.published-print2020-07-13


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