Numerical simulation of three dimensional turbulent flow structure and heat transfer in ribbed-straight, divergent and convergent ducts
Article
Article Title | Numerical simulation of three dimensional turbulent flow structure and heat transfer in ribbed-straight, divergent and convergent ducts |
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ERA Journal ID | 39606 |
Article Category | Article |
Authors | Etminan, Amin (Author), Harun, Zambri (Author) and Sharifian, Ahmad (Author) |
Journal Title | International Journal of Mechanics |
Journal Citation | 10, pp. 362-367 |
Number of Pages | 6 |
Year | 2016 |
Place of Publication | Greece |
ISSN | 1998-4448 |
Web Address (URL) | http://naun.org/cms.action?id=12113 |
Abstract | Turbulent heat transfer and flow structure inside straight, divergent and convergent ducts with square ribs has been investigated for Reynolds number varying from 7000 to 100000 numerically. The simulations have been employed using the one and two turbulent models in particular Re-normalization group (RNG) as the most efficient model. The impact of divergence or convergence on thermal efficiency of ducts during cooling process is explored in two and three dimensional flow regimes. Results reveal that divergent channel transfers higher amount of heat in comparison to other kinds of channels. Furthermore, divergent channel records less pressure loss and higher thermal efficiency where fully developed flow can be seen just through the straight duct. Computational data show a good agreement with experimental results available in the literature. |
Keywords | numerical simulation; heat transfer enhancement; square rib; vortex generator; straight/convergent/divergent ducts |
ANZSRC Field of Research 2020 | 401201. Aerodynamics (excl. hypersonic aerodynamics) |
401703. Energy generation, conversion and storage (excl. chemical and electrical) | |
401799. Mechanical engineering not elsewhere classified | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National University of Malaysia |
Department of Mechanical and Mechatronic Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q39y4/numerical-simulation-of-three-dimensional-turbulent-flow-structure-and-heat-transfer-in-ribbed-straight-divergent-and-convergent-ducts
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