Fast vortex method calculation using a special-purpose computer

T. K. Sheel, K. Yasuoka, S. Obi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A mathematical formulation for the 3D vortex method has been developed for calculation using a special-purpose computer MDGRAPE-2 that was originally designed for molecular dynamics simulations. We made an assessment of this hardware for a few representative problems and compared the results with and without it. It is found that the generation of appropriate function tables, which are used to call libraries, embedded in MDGRAPE-2 is of primary importance in order to retain accuracy. The error arising from the approximation is evaluated by calculating a pair of vortex rings impinging to themselves. Consequently, acceleration about 50 times greater is achieved by MDGRAPE-2 while the error in the statistical quantities such as kinetic energy and enstrophy remain negligible.

Original languageEnglish
Pages (from-to)1319-1326
Number of pages8
JournalComputers and Fluids
Volume36
Issue number8
DOIs
Publication statusPublished - 2007 Sep 1

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ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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