NDLI: Acceleration of Vortex Method Calculation using MDGRAPE-2: A special purpose computer

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Acceleration of Vortex Method Calculation using MDGRAPE-2: A special purpose computer

Content Provider	Semantic Scholar
Author	Sheel, Tarun Kumar Yasuoka, Kenji Obi, Shinnosuke
Copyright Year	2005
Abstract	HEAD-ON-COLLISON Contributions to vortex methods for the computation of incompressible unsteady flows are presented. Using a core spreading method, the interactions of two identical rings moving on a collision course along parallel lines are studied. Evolution of a passive nondiffusing scalar carried initially with the vortices is visualized and analyzed. For the head-on collision, a periodic deformation is generated along the periphery of the colliding vortex rings, developing into smaller vortex rings which move in the radial direction, as demonstrated by experiments (Lim and Nickels 1992). SIDE-BY-SIDE CONFIGURATION We investigate the reconnection of vortex rings at high Reynolds numbers for a variety of configurations. The fusion of two vortex rings that are initially side by side is calculated. The investigation is closely related to the understanding of the interaction between three-dimensional vortex structures, a fundamental step towards the understanding of turbulent flows. We found two prominent reconnection processes: first, the two vortex rings merge into one by viscous annihilation of opposite vortcity and second, two new rings, which are connected by cutting each other during collision as demonstrated in previous calculations. (S. Kida et al 1989).
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://perso.uclouvain.be/tarun.sheel/abstract/Abstract_ICVFM05.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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