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    Dispersion of Ellipsoidal Particles in an Isotropic Pseudo-Turbulent Flow Field

    Source: Journal of Fluids Engineering:;1995:;volume( 117 ):;issue: 001::page 154
    Author:
    Fa-Gung Fan
    ,
    Goodarz Ahmadi
    DOI: 10.1115/1.2816805
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Dispersion of ellipsoidal particles in a simulated isotropic pseudo-turbulent field is studied. A procedure using Euler’s four parameters in describing the particle orientations is used, and the governing equations for the translational and rotational motions of particles are outlined. Turbulence fluctuation velocity field is simulated by a Gaussian random model. Motions of ellipsoidal particles of different sizes and lengths are analyzed. Ensemble and time averagings are used for evaluating various statistics of particle motion. Effects of size, shape, and density ratio on the mean-square particle velocities and the relative particle diffusivities are studied. By applying the orientation-averaging procedure, an analytical model for estimating the mean-square particle velocities and the relative diffusivities is developed. The predictions of the approximate model are compared with the simulation results and discussed.
    keyword(s): Flow (Dynamics) , Particulate matter , Turbulence , Motion , Density , Rotation , Equations , Shapes AND Simulation results ,
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      Dispersion of Ellipsoidal Particles in an Isotropic Pseudo-Turbulent Flow Field

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    http://yetl.yabesh.ir/yetl1/handle/yetl/115558
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    contributor authorFa-Gung Fan
    contributor authorGoodarz Ahmadi
    date accessioned2017-05-08T23:47:38Z
    date available2017-05-08T23:47:38Z
    date copyrightMarch, 1995
    date issued1995
    identifier issn0098-2202
    identifier otherJFEGA4-27093#154_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/115558
    description abstractDispersion of ellipsoidal particles in a simulated isotropic pseudo-turbulent field is studied. A procedure using Euler’s four parameters in describing the particle orientations is used, and the governing equations for the translational and rotational motions of particles are outlined. Turbulence fluctuation velocity field is simulated by a Gaussian random model. Motions of ellipsoidal particles of different sizes and lengths are analyzed. Ensemble and time averagings are used for evaluating various statistics of particle motion. Effects of size, shape, and density ratio on the mean-square particle velocities and the relative particle diffusivities are studied. By applying the orientation-averaging procedure, an analytical model for estimating the mean-square particle velocities and the relative diffusivities is developed. The predictions of the approximate model are compared with the simulation results and discussed.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDispersion of Ellipsoidal Particles in an Isotropic Pseudo-Turbulent Flow Field
    typeJournal Paper
    journal volume117
    journal issue1
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.2816805
    journal fristpage154
    journal lastpage161
    identifier eissn1528-901X
    keywordsFlow (Dynamics)
    keywordsParticulate matter
    keywordsTurbulence
    keywordsMotion
    keywordsDensity
    keywordsRotation
    keywordsEquations
    keywordsShapes AND Simulation results
    treeJournal of Fluids Engineering:;1995:;volume( 117 ):;issue: 001
    contenttypeFulltext
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