LOCAL RESONANCE IN THERMAL CONVECTION.

R. E. Kelly, A. J. Pearlstein

Research output: Contribution to journalConference articlepeer-review

Abstract

Two-dimensional convection rolls are resonantly excited when the Rayleigh number (Ra) is close to the critical value (Ra//c) if a spatially periodic variation of the wall temperature occurs with a wavelength close to the critical value. In this paper, the amplitude of the variation is taken to decay slowly away from the point of maximum thermal forcing, so that the forcing is localized. For a case when the forcing decays exponentially, the amplitude of convection decays algebraically if Ra equals Ra//c. For Ra greater than Ra//c, three solutions exist, of which one exhibits a highly nonlinear behavior.

Original languageEnglish (US)
Pages (from-to)77-90
Number of pages14
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume54
StatePublished - Dec 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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