Article dans une revue avec comité de lecture


Note on the turbulence transition threshold of a buoyancy-driven flow over an isothermal vertical wall
WSEAS Transactions on Heat and Mass Transfer, Vol. 2, Issue 1, p. 1-5, ISSN : 1790-5044, 2007.

par   Catalin Viorel POPA , Stéphane FOHANNO , Guillaume POLIDORI

Résumé :

Abstract :

The integral formalism has been developped in an attempt to predict the mathematical transition threshold from laminar to turbulent regimes in a free convection boundary-layer flow adjacent to an isothermal vertical wall and also to gain a better understanding in the prediction of the turbulence mechanism. The transition threshold is approached herein as the intersection of the two fully developped laminar and turbulent flow regimes. As earlier shown for the uniform heat flux condition, the transition for the isothermal wall condition is also Prandtl number dependent and occurs differently depending on whether the dynamical or thermal viewpoints are considered. A change in the transition threshold behaviour is observed at Pr = 20.


Thématique du GRESPI concernée par cet article :

          -Thermique

Annonces

  • 4th INTERNATIONAL CONFERENCE ON ENERGY, MATERIALS, APPLIED ENERGETICS AND POLLUTION (ICEMAEP’2018) 29, 30 Avril 2018, à Constantine, ALGERIE.
    Programme ICEMAEP 2018
  • CIRI2018 - 5ème édition du Congrès International sur l’ingénierie des Risques Industriels 17, 18, 19 Avril 2018 à Alger
    Programme CIRI 2018
  • Journée thématique de la Société Française de Thermique et French Interpore Chapter, Le mercredi 25 avril 2018, espace Hamelin, Paris 16.
    Programme Journée SFT 2018