| Residential College | false |
| Status | 已發表Published |
| 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 Publication | World Academy of Science, Engineering and Technology
 |
| ISSN | 2010376X 20103778 |
| Volume | 81Pages:653-662 |
| Abstract | The 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. |
| Keyword | Keulegan-carpenter number Nusselt number Oscillating pipe flows Reynolds number |
| URL | View the original |
| Language | 英語English |
| Fulltext Access | |
| Document Type | Journal article |
| Collection | University of Macau |
| Affiliation | 1.University of Minnesota Twin Cities 2.Universidade de Macau |
| First Author Affilication | University of 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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