Abstract
We investigated the flow and heat transfer characteristics in a Twisted elliptic tube (TET). The effects of geometry parameters such as the aspect ratio and number of rotations in the TET were analyzed comparatively using three-dimensional (3-D) numerical simulation. We also solved numerically the conservation equations of continuity, momentum, and energy in the TET. Fully developed flow in the TET was modeled using the realizable k-ε turbulence model and steady incompressible Reynolds-averaged Navier-Stokes (RANS) equations. The simulation was performed for Reynolds numbers of 100, 1000 and 10000. The pressure drop and the heat transfer of the TET were assessed in terms of the Darcy friction factor and Colburn j-factor, and overall performance was evaluated using the area and volume goodness factors.
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References
L. Todd, Some comments on steady, laminar flow through twisted pipes, Journal of Engineering Mathematics, 11 (1977) 29–48.
W. P. Kotorynski, Steady laminar flow through a twisted pipe of elliptical cross-section, Computers and Fluids, 14 (1986) 433–444.
E. R. Tuttle, Laminar flow in twisted pipes, Journal of Fluid Mechanics, 219 (1990) 545–570.
V. M. Ievlev, B. V. Dzyubenko, G. A. Dreitser and Y. V. Vilemas, In-line and crossflow helical tube heat exchangers, International Journal of Heat and Mass Transfer, 25 (1982) 319–323.
F. Bishara, M. A. Jog and R. M. Manglik, Computational simulation of swirl enhanced flow and heat transfer in a twisted oval tube, Journal of Heat Transfer, 131 (2009) 080902.
S. Yang, L. Zhang and H. Xu, Experimental study on convective heat transfer and flow resistance characteristics of water flow in twisted-elliptical tubes, Applied Thermal Engineering, 31 (2011) 2981–2991.
X. Tan, D. Zhu, G. Zhou and L. Zeng, Experimental and numerical study of convective heat transfer and fluid flow in twisted oval tubes, Heat Mass Transfer, 45 (2009) 693–702.
R. K. Shah and A. L. London, Laminar flow forced convection in ducts, Academic Press Inc., New York (1978).
G. O. Brown, The history of the Darcy-Weisbach equation for pipe flow resistance, Proceedings of the 150th Anniversary Conference of ASCE, Washington DC, USA (2002) 34–43.
F. C. Colebrook, Turbulent flow in pipes with particular reference to the transition region between the smooth and rough pipe laws, Journal of the ICE, London, 11 (1939) 133–156.
V. Gnielinski, New equations for heat and mass transfer in turbulent pipe and channel flow, International Chemistry Engineering, 16 (1976) 359–368.
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Recommended by Associate Editor Hyoung-gwon Choi
M. Y. Ha received his B.S. degree from Pusan National University, Korea in 1981, his M.S. degree, in 1983, from Korea Advanced Institute of Science and Technology, Korea, and his Ph.D. degree from Pennsylvania State University, USA in 1990. Dr. Ha is currently a Professor at the School of Mechanical Engineering at Pusan National University in Buasn, Korea. He serves as an Editor of the Journal of Mechanical Science and Technology. His research interests are focused on thermal management, computational fluid dynamics, and micro/nano fluids.
H. R. Kim received his M.S. degree in 2011 from Pusan National University, Korea. In his master course, he conducted a number of studies under the supervision of Prof. Man-Yeong Ha. His research interests are focused on thermofluid phenomena analysis for enhancing the efficiency of industrial devices.
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Kim, H.R., Kim, S., Kim, M. et al. Numerical study of fluid flow and convective heat transfer characteristics in a twisted elliptic tube. J Mech Sci Technol 30, 719–732 (2016). https://doi.org/10.1007/s12206-016-0127-4
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DOI: https://doi.org/10.1007/s12206-016-0127-4