Journal ArticleDOI
Modelling and numerical calculation of dilute-phase pneumatic conveying in pipe systems
Norbert Huber,Martin Sommerfeld +1 more
TLDR
In this article, a physically based model for the numerical prediction of wall-bounded particulate flows is presented, which is of great interest for the powder processing industries in order to support process development and optimisation.About:
This article is published in Powder Technology.The article was published on 1998-09-01. It has received 163 citations till now. The article focuses on the topics: Plug flow & Turbulence.read more
Citations
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Analysis of collision effects for turbulent gas–particle flow in a horizontal channel: Part I. Particle transport
TL;DR: In this article, the behavior of spherical solid particles in a horizontal channel flow is analyzed using numerical calculations based on the Lagrangian approach and integral properties are presented in order to reveal the effects of wall roughness and inter-particle collisions.
Journal ArticleDOI
Numerical simulation of complex particle-fluid flows
Kaiwei Chu,Aibing Yu +1 more
TL;DR: In this article, a numerical study of particle-fluid flow in complex three-dimensional (3D) systems by means of Combined Continuum and Discrete Method (CCDM) is presented, which applies Newton's laws of motion to every particle and the flow of continuum fluid is described by the local averaged Navier-Stokes equations that can be solved by the traditional Computational Fluid Dynamics (CFD).
Journal ArticleDOI
Dust in brown dwarfs. II. The coupled problem of dust formation and sedimentation
TL;DR: In this paper, the authors quantify and discuss the physical and surface chemical processes leading to the formation, temporal evolution and sedimentation of dust grains in brown dwarf and giant gas planet atmospheres: nucleation, growth, evaporation and gravitational settling.
Journal ArticleDOI
Experimental studies on particle behaviour and turbulence modification in horizontal channel flow with different wall roughness
J. Kussin,Martin Sommerfeld +1 more
TL;DR: In this paper, a developed particle-laden horizontal channel flow (length 6m, height 35mm, the length is about 170 channel heights) is presented using phase-Doppler anemometry for simultaneous determination of air and particle velocity.
Journal ArticleDOI
Applicability of a coarse-grained CFD–DEM model on dense medium cyclone
TL;DR: In this paper, a coarse-grained (CG) model is developed to model the swirling multiphase flow in a dense medium cyclone (DMC) and the error caused by the CG concept is quantified by carrying out controlled numerical calculations to directly compare the simulated results between a standard CFD-DEM model and a CG CFD−DEM model.
References
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Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Journal ArticleDOI
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.
Journal ArticleDOI
The Particle-Source-In Cell (PSI-CELL) Model for Gas-Droplet Flows
Journal ArticleDOI
The transverse force on a spinning sphere moving in a viscous fluid
S. I. Rubinow,Joseph B. Keller +1 more
TL;DR: In this article, the Stokes and Oseen expansions of the Oseen equation are used to calculate the transverse force of a spinning sphere in a viscous fluid, which is in such a direction as to account for the curving of a pitched baseball, the long range of a flying golf ball, etc.
Journal ArticleDOI
Effect of particle size on modulating turbulent intensity
R. A. Gore,Clayton T. Crowe +1 more
TL;DR: In this article, a modele physique simple for expliquer l'augmentation and la diminution de l'intensite turbulente provoquee by l'addition of particules is proposed.
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Experimental analysis and modelling of particle-wall collisions
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