Numerical simulations of resonant heat transfer augmentation at low Reynolds numbers

Miles Greiner, Paul F. Fischer, Henry Tufo

Research output: Contribution to journalArticlepeer-review


The effect of flow rate modulation on low Reynolds number heat transfer enhancement in a transversely grooved passage was numerically simulated using a two-dimensional spectral element technique. Simulations were performed at subcritical Reynolds numbers of Rem = 133 and 267, with 20 percent and 40 percent flow rate oscillations. The net pumping power required to modulate the flow was minimized as the forcing frequency approached the predicted natural frequency. However, mixing and heat transfer levels both increased as the natural frequency was approached. Oscillatory forcing in a grooved passage requires two orders of magnitude less pumping power than flat passage systems for the same heat transfer level. Hydrodynamic resonance appears to be an effective method of increasing heat transfer in low Reynolds number systems, especially when pumping power is at a premium.

Original languageEnglish (US)
Pages (from-to)1169-1175
Number of pages7
JournalJournal of Heat Transfer
Issue number6
StatePublished - Dec 2002
Externally publishedYes


  • Augmentation
  • Enhancement
  • Heat transfer
  • Instability
  • Unsteady

ASJC Scopus subject areas

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


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