UM
Fluid flow and heat transfer structures of oscillating pipe flows
Su Y.2; Davidson J.H.1; Kulacki F.A.1
2011-09-01
Source PublicationWorld Academy of Science, Engineering and Technology
ISSN2010376X 20103778
Volume81Pages:653-662
AbstractThe RANS method with Saffman's turbulence model was employed to solve the time-dependent turbulent Navier-Stokes and energy equations for oscillating pipe flows. The method of partial sums of the Fourier series is used to analyze the harmonic velocity and temperature results. The complete structures of the oscillating pipe flows and the averaged Nusselt numbers on the tube wall are provided by numerical simulation over wide ranges of ReA and ReR. Present numerical code is validated by comparing the laminar flow results to analytic solutions and turbulence flow results to published experimental data at lower and higher Reynolds numbers respectively. The effects of ReA and ReR on the velocity, temperature and Nusselt number distributions have been di scussed. The enhancement of the heat transfer due to oscillating flows has also been presented. By the way of analyzing the overall Nusselt number over wide ranges of the Reynolds number Re and Keulegan- Carpenter number KC, the optimal ratio of the tube diameter over the oscillation amplitude is obtained based on the existence of a nearly constant optimal KC number. The potential application of the present results in sea water cooling has also been discussed.
KeywordKeulegan-carpenter number Nusselt number Oscillating pipe flows Reynolds number
URLView the original
Language英語
Fulltext Access
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.University of Minnesota Twin Cities
2.Universidade de Macau
Recommended Citation
GB/T 7714
Su Y.,Davidson J.H.,Kulacki F.A.. Fluid flow and heat transfer structures of oscillating pipe flows[J]. World Academy of Science, Engineering and Technology,2011,81:653-662.
APA Su Y.,Davidson J.H.,&Kulacki F.A..(2011).Fluid flow and heat transfer structures of oscillating pipe flows.World Academy of Science, Engineering and Technology,81,653-662.
MLA Su Y.,et al."Fluid flow and heat transfer structures of oscillating pipe flows".World Academy of Science, Engineering and Technology 81(2011):653-662.
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