Particle tracking in unstructured, arbitrary polyhedral meshes for use in CFD and molecular dynamics

G.B. Macpherson, N. Nordin, H.G. Weller

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Many classes of engineering fluid dynamics simulation require the tracking of discrete elements, for example, dispersed particles in a solvent, a spray of diesel injected into an internal Combustion engine, or the dynamics of granular materials. Realistic simulations often require complex, 3D geometries, generated from CAD models and meshed With unstructured polyhedra, which may be deforming, in motion or spatially decomposed for parallel computation. We present an algorithm to track the motion of particles in such geometries which is designed to be computationally efficient and robust in imperfect 3D meshes where small holes or overlaps are present. It has been applied to a wide range of engineering problems ranging from injected fuel sprays in internal combustion engines to molecular dynamics modelling of nanoscale flows.
LanguageEnglish
Pages263-273
Number of pages10
JournalCommunications in Numerical Methods in Engineering
Volume25
Issue number3
DOIs
Publication statusPublished - Mar 2009

Fingerprint

Internal Combustion Engine
Particle Tracking
Spray
Internal combustion engines
Molecular Dynamics
Molecular dynamics
Computational fluid dynamics
Mesh
Engineering
Molecular Modeling
Discrete Elements
Geometry
Motion
Granular Materials
Granular materials
Arbitrary
Parallel Computation
Dynamic Modeling
Fluid Dynamics
Fluid dynamics

Keywords

  • particle tracking
  • molecular dynamics
  • droplet spray
  • unstructured mesh
  • OpenFOAM

Cite this

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abstract = "Many classes of engineering fluid dynamics simulation require the tracking of discrete elements, for example, dispersed particles in a solvent, a spray of diesel injected into an internal Combustion engine, or the dynamics of granular materials. Realistic simulations often require complex, 3D geometries, generated from CAD models and meshed With unstructured polyhedra, which may be deforming, in motion or spatially decomposed for parallel computation. We present an algorithm to track the motion of particles in such geometries which is designed to be computationally efficient and robust in imperfect 3D meshes where small holes or overlaps are present. It has been applied to a wide range of engineering problems ranging from injected fuel sprays in internal combustion engines to molecular dynamics modelling of nanoscale flows.",
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Particle tracking in unstructured, arbitrary polyhedral meshes for use in CFD and molecular dynamics. / Macpherson, G.B.; Nordin, N.; Weller, H.G.

In: Communications in Numerical Methods in Engineering, Vol. 25, No. 3, 03.2009, p. 263-273.

Research output: Contribution to journalArticle

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