Technical note: Variable viscosity effects on the vortex instability of free convection boundary layer flow over a horizontal surface

Jiin Yuh Jang, Jin Sheng Leu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The role of temperature dependent viscosity is studied in the flow and vortex instability of a heated horizontal free convection boundary layer flow. Numerical results for the Nusselt, shear stress, critical Grashof, and wave numbers are presented for Prandtl numbers Pr= 0.7, 7, 50, 100, and 500. It is shown that, for liquid heating, variable viscosity effect enhances the heat transfer rate and destabilizes the flow, while for gas heating, the opposite trend is true.

Original languageEnglish
Pages (from-to)495-500
Number of pages6
JournalNumerical Heat Transfer; Part A: Applications
Volume25
Issue number4
DOIs
Publication statusPublished - 1994 Apr

All Science Journal Classification (ASJC) codes

  • Numerical Analysis
  • Condensed Matter Physics

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