A new vortex particle-in-cell (PIC) method is developed for the computation of three-dimensional unsteady, incompressible viscous flow in an unbounded domain. The method combines the advantages of the Lagrangian particle methods for convection and the use of an Eulerian grid to compute the diffusion
A hybrid vortex method for the simulation of three-dimensional flows
✍ Scribed by Wei Li; Marco Vezza
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 401 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0271-2091
- DOI
- 10.1002/fld.1610
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✦ Synopsis
Abstract
This paper presents an integral vorticity method for solving three‐dimensional Navier–Stokes equations. A finite volume scheme is implemented to solve the vorticity transport equation, which is discretized on a structured hexahedral mesh. A vortex sheet algorithm is used to enforce the no‐slip boundary condition through a vorticity flux at the boundary. The Biot–Savart integral is evaluated to compute the velocity field, in conjunction with a fast algorithm based on multipole expansion. This method is applied to the simulation of uniform flow past a sphere. Copyright © 2007 John Wiley & Sons, Ltd.
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