Vortex particle-in-cell method for three-dimensional viscous unbounded flow computations

A newly developed vortex particle-in-cell (PIC) method is applied to the computation of three dimensional unsteady incompressible viscous flows in an unbounded domain. A diffusion model of the method is first tested, and a single vortex ring is then used as a case study. The propagation velocity of...

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Veröffentlicht in:	International journal for numerical methods in fluids 2000-01, Vol.32 (1), p.29-50
Hauptverfasser:	CHUNG HO LIU, DOORLY, D. J
Format:	Artikel
Sprache:	eng
Schlagworte:	Boundary conditions Computational methods in fluid dynamics Equations of motion Exact sciences and technology Fluid dynamics Fundamental areas of phenomenology (including applications) Incompressible flow Mathematical models Numerical methods Physics Rotational flow and vorticity Vortex dynamics Vortex flow
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Beschreibung
Zusammenfassung:	A newly developed vortex particle-in-cell (PIC) method is applied to the computation of three dimensional unsteady incompressible viscous flows in an unbounded domain. A diffusion model of the method is first tested, and a single vortex ring is then used as a case study. The propagation velocity of the single vortex ring is compared with Saffman's (1970) model, and the satisfaction of the conservation laws is examined numerically. Finally, the interaction between two vortex rings is investigated. (AIAA)
ISSN:	0271-2091 1097-0363