Journal ArticleDOI
Dispersion and Deposition of Spherical Particles from Point Sources in a Turbulent Channel Flow
Amy Li,Goodarz Ahmadi +1 more
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In this paper, the dispersion and deposition of aerosol particles from a point source in a turbulent channel flow are studied, and an empirical mean velocity profile and experimental data for turbulent intensities are used in the analysis.Abstract:
The dispersion and deposition of particles from a point source in a turbulent channel flow are studied. An empirical mean velocity profile and the experimental data for turbulent intensities are used in the analysis. The instantaneous turbulence fluctuation is simulated as a continuous Gaussian random field, and an ensemble of particle trajectories is generated and statistically analyzed. A series of digital simulations for dispersion and deposition of aerosol particles of various sizes from point sources at different positions from the wall is performed. Effects of Brownian diffusion on particle dispersion are studied. The effects of variation in particle density and particle-surface interaction are also discussed.read more
Citations
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Geometry Effect on Deposition and Residence Time of Polydisperse Fine Drops in Mini-Risers Under Developing Flow Condition
TL;DR: In this article, the authors investigated the effect of mini-riser geometry on the transport, dispersion and deposition of fine water drops in the 3D laminar developing flow numerically and experimentally.
Journal ArticleDOI
A numerical investigation of the particle behaviors and entropy generation in mixed convection inside a vented enclosure
Oktay Çiçek,A.C. Baytas +1 more
TL;DR: In this article , the authors focus on the numerical investigation of the transportation, deposition and removal of solid particles in the range of 5 μm to 0.01 μm for mixed convection flow in the vented square cavity by utilizing the Eulerian-Lagrangian method with one-way coupling.
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Atheroprone sites of coronary artery bifurcation: Effect of heart motion on hemodynamics-dependent monocytes deposition.
TL;DR: In this article, a 3D computational model of the Left Anterior Descending coronary artery (LAD) and its first diagonal branch (D1) under the heart motion was investigated.
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Numerical Investigation on Gas Bubbling Assisted Inclusion Transport and Removal in Multistrand Tundish
Journal ArticleDOI
Cell adhesion in microchannel multiple constrictions - Evidence of mass transport limitations.
TL;DR: In this work, for the first time, both WSS and convection and Brownian diffusion effects on cell adhesion were evaluated along a microchannel with intercalate constriction and expansion zones designed to mimic the hydrodynamics of the human body and biomedical devices.
References
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Journal ArticleDOI
On the Theory of the Brownian Motion
TL;DR: In this paper, the mean values of all the powers of the velocity $u$ and the displacement $s$ of a free particle in Brownian motion are calculated and the exact expressions for the square of the deviation of a harmonically bound particle in the Fokker-Planck partial differential equation as a function of the time and the initial deviation are obtained.
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Equation of motion for a small rigid sphere in a nonuniform flow
Martin R. Maxey,James J. Riley +1 more
TL;DR: In this paper, the forces on a small rigid sphere in a nonuniform flow are considered from first prinicples in order to resolve the errors in Tchen's equation and the subsequent modified versions that have since appeared.
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The lift on a small sphere in a slow shear flow
TL;DR: In this article, it was shown that a sphere moving through a very viscous liquid with velocity V relative to a uniform simple shear, the translation velocity being parallel to the streamlines and measured relative to streamline through the centre, experiences a lift force 81·2μVa2k½/v½ + smaller terms perpendicular to the flow direction, which acts to deflect the particle towards the streamline moving in the direction opposite to V.