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G. Zivkovic
Institute 'Boris Kidric', Laboratory for Thermal Engineering, P.O.Box 522, Belgrad 11000, Yugoslavia

Martin Sommerfeld
Martin Luther Untversitat Halle-Wittenberg Institut fur Verfahrenstechnik, Halle (Saale), Germany; Energetics and Mechanical Department, Universidad Autonoma de Occidente, Santiago de Call, Colombia


The present paper considers the numerical simulation of horizontal pneumatic conveying in a 2-d channels. The gas-phase is calculated by the time time-averaged Navier-Stokes equations, and the well known k-ε model of turbulence is used to close these equations. The particle-phase is treated with the Lagrangian approach, and the PSI-IN-CELL method is used for coupling the phases. A detailed model for the particle-wall interaction including the effect of wall roughness has been considered in the numerical calculation. The roughness of the walls and slight non-sphericities in the particle shape was simulated by changing the local wall inclination by a stochastic process. Inter-particle collisions were modelled using a stochastic approach in which for every particle in every time step the collision probability was calculated and the particle velocity was modified accordingly. The numerical results agree reasonably with the experimental results.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH