Numerical analysis of laminar heat transfer performance of in-plane spiral ducts with various cross-sections at fixed cross-section area
Sasmito, A.P. Kurnia, J.C. Wang, W. Jangam, S.V. Mujumdar, A.S.
Kurnia, J.C.
Wang, W.
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Abstract
A numerical approach is carried out to investigate the heat transfer performance of in-plane spiral ducts with various cross sections - rectangular, square, triangular, trapezoidal, circular and half circular. Simulations were carried out at a constant inlet Reynolds number at fixed cross section area for both constant wall temperature and constant wall heat flux conditions. Results are compared to straight ducts of the same cross sections and at the same length as the coiled ducts. The effects of Reynolds number and Prandtl number are also discussed for various geometries. The results are presented and are aimed to determine the advantages, limitations and effects of in-plane spiral ducts of various cross sections on the flow and heat transfer characteristics when the cross section area is fixed. © 2012 Elsevier Ltd. All rights reserved.
Keywords
Coils, Heat transfer performance, In-plane spiral, Mathematical model
Source Title
International Journal of Heat and Mass Transfer
Publisher
Series/Report No.
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Date
2012-10
DOI
10.1016/j.ijheatmasstransfer.2012.05.085
Type
Article