DIRECT NUMERICAL SIMULATIONS (DNS) OF FLUID-SOLID SYSTEMS

Howard H. Hu

doi:10.1615/MultScienTechn.v15.i1-4.170

Multiphase Science and Technology

Editor chefe: Akio Tomiyama (open in a new tab)

Editor fundadors: Jean-Marc Delhaye (open in a new tab) Geoffrey F. Hewitt (open in a new tab) Novak Zuber (open in a new tab)

Editor associados: Gioia Falcone (open in a new tab) Arun Kumar Nayak (open in a new tab) Masahiro Kawaji (open in a new tab) Shu Takagi (open in a new tab)

Publicou 4 edições por ano

ISSN Imprimir: 0276-1459

ISSN On-line: 1943-6181

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DIRECT NUMERICAL SIMULATIONS (DNS) OF FLUID-SOLID SYSTEMS

Volume 15, Edição 1-4, 2003, pp. 193-240

DOI: 10.1615/MultScienTechn.v15.i1-4.170

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Howard H. Hu
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104-6315, USA

RESUMO

This contribution reviews the application of Direct Numerical Simulations (DNS) to the prediction of fluid-solid systems. First, the governing equations are presented and the numerical methods (fully explicit, Lagranian-Eulerian and explicit-implicit) discussed. The temporal and spatial discretization methods are described. Methods for moving the particles in the computational domain are presented and the influence of collisions is discussed. Finally, examples are given of the application of the code, including sedimentation of a single sphere in a tube, migration of neutrally buoyant sphere in a Poiseuille flow, interaction of particles in Newtonian and viscoelastic fluids and lubrication in pressure-driven particulate flows.

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