Results 141 to 150 of about 25,672 (196)

A Direct Numerical Simulation (DNS) Study on the Effect of Particle Configuration on Drag

Communications in Computational Physics, 2021
Summary: Drag correlations are very important in particle-laden two-phase flow simulations. Some statistical studies have investigated extracting particle configuration factors from simulation data to improve drag correlations. However, little attention has been paid to studying particle configuration effects on drag from the perspective of the flow ...
Mo, Yi, Long, Zichao, Zhang, Pingwen
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Direct Numerical Simulations (DNS) of Particles in Spatially Varying Electric Fields

Volume 1C, Symposia: Fundamental Issues and Perspectives in Fluid Mechanics; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Gas-Solid Flows: Dedicated to the Memory of Professor Clayton T. Crowe; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes, 2014
A numerical scheme is developed to simulate the motion of dielectric particles in uniform and nonuniform electric fields of a micro fluidic device. The particles are moved using a direct simulation scheme in which the fundamental equations of motion of fluid and solid particles are solved without the use of models.
Edison C. Amah, Pushpendra Singh, Mohammad Janjua   +2 more
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Heat transfer in particulate flows with Direct Numerical Simulation (DNS)

International Journal of Heat and Mass Transfer, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Feng, Zhi-Gang, Michaelides, Efstathios E.   +1 more
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Direct numerical simulation (DNS) of alkali metals released during char combustion

Fuel, 2019
Abstract Alkali metals in pulverized coal easily released in gas phase, cause significant fouling, atmospheric pollution and etc. during combustion and gasification. A TURE DNS method, based on fictitious domain strategy with finite volume (FV) scheme, was developed to describe the behavior of alkali metals release and transport in reacting fluid ...
Sibo Qu, Changfu You
openaire   +1 more source

Modeling thermal shock damage in refractory materials via direct numerical simulation (DNS)

Journal of the European Ceramic Society, 2010
In this paper, a computational investigation on thermo-mechanically induced damage in refractory materials resulting from severe thermal shock conditions is presented. On the basis of an idealized two-phase material system, molten aluminium thermal shock tests1 are computationally modeled by means of direct numerical simulations (DNS).
Ozdemir, I., Brekelmans, W.A.M., Geers, M.G.D.   +2 more
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Direct Numerical Simulation (DNS) of mass, momentum and heat transfer in dense fluid-particle systems

Current Opinion in Chemical Engineering, 2014
No abstract.
NG Deen, JAM Kuipers
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Meso‐scale statistical properties of gas–solid flow—a direct numerical simulation (DNS) study

AIChE Journal, 2016
Statistical properties of particles in heterogeneous gas–solid flow were numerically investigated based on the results of a three‐dimensional large‐scale direct numerical simulation (DNS). Strong scale‐dependence and local non‐equilibrium of these properties, especially the particle fluctuating velocity (PFV) or granular temperature, were observed to ...
Xiaowen Liu, Limin Wang, Wei Ge
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Gas–solid interaction force from direct numerical simulation (DNS) of binary systems with extreme diameter ratios

Particuology, 2009
Fluid–particle systems as commonly encountered in chemical, metallurgical and petroleum industries are mostly polydisperse in nature. However, the relations used to describe fluid–particle interactions are originally derived from monodisperse systems, with ad hoc modifications to account for polydispersity.
Sarkar, S., Kriebitzsch, S.H.L., van der Hoef, M.A., Kuipers, J.A.M.   +3 more
openaire   +2 more sources

Numerical investigation of localised forced ignition of pulverised coal particle-laden mixtures: A Direct Numerical Simulation (DNS) analysis

Fuel, 2015
Abstract Localised forced ignition of mono-disperse pulverised coal particle-laden mixtures has been analysed based on three-dimensional Direct Numerical Simulations for the carrier phase with simplified chemistry for the combustion of volatile gases. The coal particles are treated as point sources and tracked in a Lagrangian manner.
Brosh T, Patel D, Wacks D, Chakraborty N
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Framing a novel approach for pseudo continuous modeling using Direct Numerical Simulations (DNS): Fluid dynamics in a packed bed reactor

Chemical Engineering Journal, 2022
Abstract This research frames a novel approach to develop a pseudo-continuous model for describing the dynamics of a Newtonian fluid in an industrial-scale packed-bed reactor presenting a low tube to particle diameter ratio ( d t / d p = 3.048 ) at particle Reynolds numbers ranging from 750 to 1750.
Alberto Hernandez-Aguirre, Eliseo Hernandez-Martinez, Felipe López-Isunza, Carlos O. Castillo   +3 more
openaire   +1 more source