scholarly journals Multi-particle collision dynamics with a non-ideal equation of state. II. Collective dynamics of elongated squirmer rods

2021 ◽  
Vol 155 (13) ◽  
pp. 134904
Author(s):  
Arne W. Zantop ◽  
Holger Stark
Keyword(s):  
Equation Of State ◽  
Particle Collision ◽  
Collision Dynamics ◽  
Collective Dynamics

scholarly journals A numerical study on droplet-particle collision dynamics

2016 ◽  
Vol 61 ◽  
pp. 499-509 ◽  
Author(s):  
Ilias Malgarinos ◽  
Nikolaos Nikolopoulos ◽  
Manolis Gavaises
Keyword(s):  
Numerical Study ◽  
Particle Collision ◽  
Collision Dynamics

scholarly journals Multiscale Simulation of Non-Metallic Inclusion Aggregation in a Fully Resolved Bubble Swarm in Liquid Steel

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 517
Author(s):  
Jean-Sébastien Kroll-Rabotin ◽  
Matthieu Gisselbrecht ◽  
Bernhard Ott ◽  
Ronja May ◽  
Jochen Fröhlich ◽  
...  
Keyword(s):  
Particle Size ◽  
Shear Flow ◽  
Initial Conditions ◽  
Bubbly Flow ◽  
Multiscale Simulation ◽  
Particle Collision ◽  
Immersed Boundary ◽  
Collision Dynamics ◽  
Plane Shear ◽  
Boltzmann Method

Removing inclusions from the melt is an important task in metallurgy with critical impact on the quality of the final alloy. Processes employed with this purpose, such as flotation, crucially depend on the particle size. For small inclusions, the aggregation kinetics constitute the bottleneck and, hence, determine the efficiency of the entire process. If particles smaller than all flow scales are considered, the flow can locally be replaced by a plane shear flow. In this contribution, particle interactions in plane shear flow are investigated, computing the fully resolved hydrodynamics at finite Reynolds numbers, using a lattice Boltzmann method with an immersed boundary method. Investigations with various initial conditions, several shear values and several inclusion sizes are conducted to determine collision efficiencies. It is observed that although finite Reynolds hydrodynamics play a significant role in particle collision, statistical collision efficiency barely depends on the Reynolds number. Indeed, the particle size ratio is found to be the prevalent parameter. In a second step, modeled collision dynamics are applied to particles tracked in a fully resolved bubbly flow, and collision frequencies at larger flow scale are derived.

Defects around nanocolloids in nematic solvents simulated by Multi-particle Collision Dynamics

2020 ◽  
Vol 547 ◽  
pp. 123862 ◽  
Author(s):  
Denisse Reyes-Arango ◽  
Jacqueline Quintana-H. ◽  
Julio C. Armas-Pérez ◽  
Humberto Híjar
Keyword(s):  
Particle Collision ◽  
Collision Dynamics

Simulation of complex fluids by multi-particle-collision dynamics

2005 ◽  
Vol 169 (1-3) ◽  
pp. 326-330 ◽  
Author(s):  
R.G. Winkler ◽  
M. Ripoll ◽  
K. Mussawisade ◽  
G. Gompper
Keyword(s):  
Complex Fluids ◽  
Particle Collision ◽  
Collision Dynamics

Experimental measurements of particle collision dynamics in a pseudo-2D gas-solid fluidized bed

2017 ◽  
Vol 167 ◽  
pp. 297-316 ◽  
Author(s):  
Zhaochen Jiang ◽  
Thomas Hagemeier ◽  
Andreas Bück ◽  
Evangelos Tsotsas
Keyword(s):  
Fluidized Bed ◽  
Particle Collision ◽  
Experimental Measurements ◽  
Collision Dynamics

On the Dynamics of Particle-Particle Interaction

Tribology ◽  
2005 ◽  
Author(s):  
W. Cheng ◽  
K. Farhang ◽  
Y. Kwon
Keyword(s):  
Particle System ◽  
Particle Interaction ◽  
Viscoelastic Model ◽  
Approximate Equation ◽  
Conservative System ◽  
Particle Collision ◽  
Elastic Model ◽  
Collision Dynamics ◽  
Interacting Particles ◽  
Jkr Theory

In numerous engineering and science applications understanding the dynamic behavior of two interacting particles plays an indispensable role as it is the foundation based upon which the behavior of a large number of particles may be predicted. When two particles interact, two prominent forces of adhesion and elasticity are at work and, in some respect, in competition. This is especially true when particle-particle collision dynamics is of interest. Upon collision, two particles either develop physical bond, coalesce to form an agglomeration or rebound, each following a distinct path. A promising theory to address particle-particle collision dynamics is due to Johnson, Kendal and Roberts [1] referred to as the JKR method. However, JKR suffers from two main shortcomings in application to particle dynamics. These are (1) implicit relations between force and displacement and (2) representation of a two-particle system as a conservative system. These shortcomings were treated in [2] by first deriving a highly accurate approximate equation based on the JKR theory in which force and displacement are explicitly related and the extension of the JKR theory wherein the Kelving-Voigt viscoelastic model is used instead of the elastic model. This formulation provides an opportunity to study particle-particle collision dynamics, which is the study in the present paper.

Multi-particle collision dynamics simulations of sedimenting colloidal dispersions in confinement

2010 ◽  
Vol 144 ◽  
pp. 245-252 ◽  
Author(s):  
Adam Wysocki ◽  
C. Patrick Royall ◽  
Roland G. Winkler ◽  
Gerhard Gompper ◽  
Hajime Tanaka ◽  
...  
Keyword(s):  
Colloidal Dispersions ◽  
Particle Collision ◽  
Collision Dynamics ◽  
Dynamics Simulations
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