Results 11 to 20 of about 3,407,911 (288)

Results from particle-resolved simulations

, 2023
We review some of the results obtained to date with the aid of the PR-DNS approach to turbulent particulate flows. It is shown that the method has matured to a point which allows to apply it successfully to a wide variety of fluid/particle configurations, albeit still at a relatively large computational cost.
Chouippe, Agathe, Kidanemariam, Aman, Derksen, Jos, Wachs, Anthony, Uhlmann, Markus   +4 more
openaire   +3 more sources

Particle-resolved simulation of the pyrolysis process of a single plastic particle [PDF]

Heat and Mass Transfer
Abstract Particle-resolved simulations have been performed to study the pyrolysis process of a high-density polyethylene (HDPE) particle in an inert hot nitrogen flow. The simulations resolve the velocity and temperature boundary layers around the particle, as well as the gradients of temperature and concentration within the particle.
Zhang, Feichi, Tavakkol, Salar, Galeazzo, Flavio C. C., Stapf, Dieter   +3 more
core   +5 more sources

Analysis of Mobility Effects in Particle‐Gas Flows by Particle‐Resolved LBM‐DEM Simulations [PDF]

Chemie Ingenieur Technik, 2020
AbstractParticle‐resolved direct numerical simulations are performed to simulate the flow through particle assemblies that are either static or freely moving to demonstrate the influence of particle mobility. To obtain a comprehensive understanding for this influence essential parameters such as the Reynolds number, solids volume fraction, particle ...
Rosemann, Tony, Reinecke, Simon R., Kruggel-Emden, Harald   +2 more
openaire   +3 more sources

Improvement of the Viscous Penalty Method for Particle-Resolved Simulations

Open Journal of Fluid Dynamics, 2019
A numerical study of the parameters controlling the viscous penalty method is investigated to better set up Particle-Resolved Direct Numerical Simulations (PR-DNS) of particulate flows. Based on this analysis, improvements of the methods are proposed in order to reach an almost second order convergence in space.
Chadil, Mohamed-Amine, Vincent, Stéphane, Estivalèzes, Jean-Luc   +2 more
openaire   +5 more sources

A conjugated heat and mass transfer model to implement reaction in particle-resolved CFD simulations of catalytic fixed bed reactors [PDF]

Engineering Applications of Computational Fluid Mechanics, 2023
Modelling catalytic fixed bed reactors with a small tube-to-particle diameter ratio requires a detailed description of the interactions between fluid flow, intra-particle transport, and the chemical reaction(s) within the catalyst.
Martin Kutscherauer, Scott D. Anderson, Sebastian Böcklein, Gerhard Mestl, Thomas Turek, Gregor D. Wehinger   +5 more
doaj   +2 more sources

Particle resolved simulation of a 3D periodic Couette dense fluid-particle flow [PDF]

, 2016
Dense fluid-particle flow occurs in many industrial applications, such as fluidized bed technology. To model these flows, statistical approaches are developed and, since quite recently, particle resolved simulations may be used to support the validation and the development of models.
Scorsim, Oliver, Fede, Pascal, Simonin, Olivier, Vincent, Stéphane   +3 more
core   +5 more sources

A conjugated heat and mass transfer model to implement reaction in particle-resolved CFD simulations of catalytic fixed bed reactors [PDF]

, 2023
Modeling catalytic fixed bed reactors with a small tube-to-particle diameter ratio requires a detailed description of the interactions between fluid flow, intra-particle transport, and the chemical reaction(s) within the catalyst.
Martin , Kutscherauer, Gerhard, Mestl, Scott, Anderson, Sebastian, Böcklein, Gregor D. , Wehinger, Thomas, Turek   +5 more
core   +2 more sources

Investigating the settling dynamics of cohesive silt particles with particle-resolving simulations [PDF]

Advances in Water Resources, 2018
The settling of cohesive sediment is ubiquitous in aquatic environments. In the settling process, the silt particles show behaviors that are different from non-cohesive particles due to the influence of inter-particle cohesive force. While it is a consensus that cohesive behaviors depend on the characteristics of sediment particles (e.g., Bond number ...
Sun, Rui, Xiao, Heng, Sun, Honglei
openaire   +2 more sources

Settling of cohesive sediment: particle-resolved simulations [PDF]

Journal of Fluid Mechanics, 2018
We develop a physical and computational model for performing fully coupled, grain-resolved direct numerical simulations of cohesive sediment, based on the immersed boundary method. The model distributes the cohesive forces over a thin shell surrounding each particle, thereby allowing for the spatial and temporal resolution of the ...
B. Vowinckel, J. Withers, Paolo Luzzatto-Fegiz, E. Meiburg   +3 more
openaire   +6 more sources

Particle‐resolved simulations of four‐way coupled, polydispersed, particle‐laden flows

International Journal for Numerical Methods in Fluids, 2022
AbstractWe present a collocated‐grid framework for direct numerical simulations of polydisperse particles submerged in a viscous fluid. The fluid‐particle forces are coupled with the immersed boundary method (IBM) while the particle‐particle forces are modeled with a combination of contact and lubrication models, adapted for collocated grids.
Yinuo Yao, Edward Biegert, Bernhard Vowinckel, Thomas Köllner, Eckart Meiburg, Sivaramakrishnan Balachandar, Craig S. Criddle, Oliver B. Fringer   +7 more
openaire   +2 more sources