Direct numerical simulation of three-dimensional flow and augmented heat transfer in a grooved channel

M. Greiner, G. J. Spencer, P. F. Fischer

Research output: Contribution to journalArticle

Abstract

Direct numerical simulations of three-dimensional flow and augmented convective heat transfer in a transversely grooved channel are presented for the Reynolds number range 140 < Re < 2000. These calculations employ the spectral element technique. Multiple flow transitions are documented as the Reynolds number increases, from steady two-dimensional flow through broad-banded unsteady three-dimensional mixing. Three-dimensional simulations correctly predict the Reynolds-number-independent friction factor behavior of this flow and quantify its heat transfer to within 16 percent of measured values. Two-dimensional simulations, however, incorrectly predict laminar-like friction factor and heat transfer behaviors.

Original languageEnglish (US)
Pages (from-to)717-723
Number of pages7
JournalJournal of Heat Transfer
Volume120
Issue number3
DOIs
StatePublished - Aug 1998
Externally publishedYes

Keywords

  • Augmentation and Enhancement
  • Flow transition
  • Heat exchangers

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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