Comparison of turbulence models for transient cool-down natural convection in a cylindrical cavity


Contact
gkarakas [ at ] awi-bremerhaven.de

Abstract

By using standard k-ε and low Reynolds number k-ω model, we compared fluid flow and heat transfer characteristics generated by cooled surface in a cylindrical enclosure at a relatively high Rayleigh number. It was shown that although initialisation of flow is very alike in both models, sinking of convective plumes are mainly located around the periphery of the cylinder with k-ε model. The low Reynolds k-ω model produced flow in the core region and smoother vertical temperature variation. Convection lines are developed in both models.



Item Type
Inbook
Authors
Divisions
Programs
Peer revision
Peer-reviewed
Publication Status
Published
Eprint ID
10021
Cite as
Karakas, G. (2002): Comparison of turbulence models for transient cool-down natural convection in a cylindrical cavity , Advances in Fluid Mechanics 4, Rahman et al. (eds.), WIT Press, Southampton, ISBN: 1-85312-910-0 .


Share

Research Platforms
N/A

Campaigns


Actions
Edit Item Edit Item