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Início Arquivos Thermal Letter Representantes Futuras reuniões Assembléia das Conferências Internacionais de Transferência de Calor
International Heat Transfer Conference 7

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

TURBULENT HEAT TRANSFER IN A SWIRL FLOW DOWNSTREAM OF AN ABRUPT PIPE EXPANSION

M. A. Habib
Aerospace and Mechanical Engineering Department, University of Arizona, Tucson, Arizona 85721 USA; Mechanical Engineering Department, Cairo University, Cairo, Egypt

Donald M. McEligot
Aerospace and Mechanical Engineering Department, University of Arizona,Tucson, AZ 85721; Idaho National Laboratory (INL), Idaho Falls, ID 83415-3885, USA; and Institut für Kernenergetik und Energiesysteme, Universitat Stuttgart, Stuttgart, Germany

DOI: 10.1615/IHTC7.1640
pages 159-164

Resumo

Calculations of the flow and heat transfer of a swirling turbulent flow after a sudden pipe expansion are reported. The calculations were obtained by the numerical solution with a k-ε turbulence model including a modification to account for effects of streamline curvature. The predicted effects of varying the swirl number from zero to one on the heat transfer behavior are presented for a range of Prandtl numbers from 0.7 to 10. The expected effects of the swirl on the velocity and temperature fields are also reported. The results predict, for example, that the maximum Nusselt number is increased as the swirl number increases and its position moves towards the inlet section. They also show an increase in the Nusselt number as the Prandtl number increases.

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