Journal ArticleDOI
Theory on transverse migration of particles in a turbulent two-phase suspension flow due to turbulent diffusion--i
S.L. Lee,M.A. Wiesler +1 more
TLDR
In this paper, a new theoretical model has been developed to explain the behavior of transverse particle transport in turbulent flow of a dilute two-phase suspension due to turbulent diffusion, which is based on the ability of a particle to respond to surrounding fluid motion and depends on particle size and density relative to the carrier fluid, the fractional variation in particle concentration in the transverse direction as well as the existing turbulence structure of the surrounding fluid.About:
This article is published in International Journal of Multiphase Flow.The article was published on 1987-01-01. It has received 30 citations till now. The article focuses on the topics: Turbulent diffusion & Particle velocity.read more
Citations
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Improved numerical simulation of aerosol deposition in an idealized mouth-throat
TL;DR: In this article, the deposition of monodisperse particles in an idealized mouth-throat geometry has been studied numerically, and the continuous phase flow is solved using a RANS (Reynolds averaged Navier-Stokes) turbulence model at inhalation flow rates of 90.0 and 30.0 l / min.
Journal ArticleDOI
Statistical simulation of particle deposition on the wall from turbulent dispersed pipe flow
TL;DR: In this article, the trajectories and velocities of the particles are calculated, using a one-way coupling Lagrangian eddy-particle interaction model, and the influence of some forces in the particle equation of motion (i.e., the Saffman lift force, the centrifugal forces, the conservation of angular momentum and the buoyancy force) on the prediction of the deposition velocity is examined.
Journal ArticleDOI
Numerical calculations of two-phase flow in a liquid bath with bottom gas injection: The central plume
TL;DR: In this paper, a two-phase flow resulting from bottom injection of gas into a liquid bath, constrained to be axisymmetric, is modelled by governing equations that incorporate the virtual mass and particle lift forces and a diffusive interfacial force.
Journal ArticleDOI
CFD simulation of particle deposition in a horizontal turbulent duct flow
TL;DR: In this paper, a simulation of particle deposition in a horizontal turbulent duct flow is simulated by CFD (computational fluid dynamics) modeling, and it is shown that deposition rates (dimensionless deposition velocities) of particles to floors are higher than that to vertical wall and ceiling surfaces.
Journal ArticleDOI
Particle drag in a dilute turbulent two-phase suspension flow
TL;DR: In this paper, the Stokes law was used to describe the particle drag in a turbulent two-phase suspension flow, and the results of local measurements of upward turbulent flows of a solid particle-air 2-phase suspended flow were used to determine the realistic particle drag coefficient over a wide range of flow conditions.
References
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Journal ArticleDOI
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.
The Structure of Turbulence in Fully Developed Pipe Flow
TL;DR: In this paper, a hot-wire anemometer was used to measure the turbulent flow in a 10-inch pipe at speeds of approximately 10 and 100 feet per second, and the results include relevant mean and statistical quantities, such as Reynolds stresses, triple correlations, turbulent dissipation, and energy spectra.
Journal ArticleDOI
Deposition of Suspended Particles from Turbulent Gas Streams
Book
Mean Value and Correlation Problems connected with the Motion of Small Particles suspended in a turbulent fluid
TL;DR: A theoretical treatment of diffusion as a function of turbulence is presented in this article, where the method of Kolmogoroff is used to decribe the movement in statistical ways.
Journal ArticleDOI
Motion of discrete particles in a turbulent fluid
A. T. Hjelmfelt,L. F. Mockros +1 more
TL;DR: In this paper, the deviations of the particle motion from the fluid motion, as predicted by the various approximations, are explored, and the frequencies for which this deviation is large are described.