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Etude numérique et expérimentale de la convection naturelle turbulente transitoire dans un conteneur cylindrique horizontal.

Numerical and experimental study of transient turbulent natural convection in a horizontal cylindrical container.

Auteurs : XIA J. L., SMITH B. L., YADIGAROGLU G., GANTNER U., SIGG B.

Type d'article : Article

Résumé

The container is of aluminium, filled with water, and a piece-wise constant heat flux is imposed on the outside wall. Numerical results show that there exist conduction-controlled, developing and quasi-steady-state periods during the transient and that the existence of the wall has some influence on the flow and heat transfer. The flow undergoes two-vortex, four-vortex and then again two-vortex configuration changes during the transient. The four-vortex flow pattern appears to be relatively unstable, and is accompanied by asymmetric flow in the bottom region of the container. Both numerical predictions and experiments reveal a well-stratified thermal field and numerical results are validated against experimental data.

Détails

  • Titre original : Numerical and experimental study of transient turbulent natural convection in a horizontal cylindrical container.
  • Identifiant de la fiche : 1999-3431
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 41 - n. 22
  • Date d'édition : 11/1998

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