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Buoyancy effects in plane Couette flow heated uniformly from below with constant heat flux.

Author(s) : CHOI C. K., CHUNG T. J., KIM M. C.

Type of article: Article

Summary

The onset of buoyancy-driven convection in plane Couette flow heated uniformly from below was analysed theoretically. For the thermal entrance region, a new set of stability equations involving streamwise variations of disturbances are derived based on the linear theory, the scaling relations and the extended momentary instability concept. It was shown that the critical Rayleigh number that marks the onset of longitudinal vortex rolls increases with a decrease in Prandtl number. Based on the present stability criteria a new mixed convection heat transfer correlation is derived for the whole range of Rayleigh number. The analysis predicted the available experimental data of water rather well.

Details

  • Original title: Buoyancy effects in plane Couette flow heated uniformly from below with constant heat flux.
  • Record ID : 2004-2143
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 12-13
  • Publication date: 2004/06

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