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Entropy generation at the onset of natural convection.

Author(s) : MAGHERBI M., ABBASSI H., BEN BRAHIM A.

Type of article: Article

Summary

Entropy generation due to heat transfer and friction has been determined in transient state for laminar natural convection by solving numerically the mass, momentum and energy balance equations, using a control volume finite-element method. Variations in total entropy generation as a function of time for the Rayleigh number and the irreversibility distribution ratio were investigated. The evolution of the maximum entropy generation with respect to the Rayleigh number was studied. The effect of the irreversibility distribution ratio on the maximum entropy generation and the entropy generation in steady state were analysed. The irreversibility maps for Rayleigh numbers and the irreversibility distribution ratio were plotted.

Details

  • Original title: Entropy generation at the onset of natural convection.
  • Record ID : 2004-0516
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 46 - n. 18
  • Publication date: 2003/08

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