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HEAT TRANSFER ON TWO NEARBY CIRCULAR CYLINDERS  

Han, T.H. (인하대학교 대학원 기계공학과)
Yang, K.S. (인하대학교 기계공학부)
Yoon, D.H. (인하대학교 대학원 기계공학과)
Lee, K. (인하대학교 대학원 기계공학과)
Publication Information
Journal of computational fluids engineering / v.13, no.2, 2008 , pp. 42-47 More about this Journal
Abstract
Heat transfer on two identical nearby circular cylinders immersed in the uniform cross flow at Re=120 and Pr=0.7 was numerically studied. We consider all possible types of arrangements of the two circular cylinders in terms of the distance between the two cylinders and the inclination angle with respect to the direction of the main flow. It turns out that significant changes in the characteristics of heat transfer are noticed depending on how the two circular cylinders are positioned, resulting in quantitative changes of heat transfer coefficients on both cylinders. Collecting all the numerical results obtained, we propose a contour diagram for averaged Nusselt number for each of the two cylinders. The perfect geometrical symmetry implied in the flow configuration allows one to use those diagrams to estimate heat transfer rates on two identical circular cylinders arbitrarily positioned in physical space with respect to the main flow direction.
Keywords
Heat Transfer; Circular Cylinder; Nusselt Number; Immersed Boundary Method;
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  • Reference
1 1985, Williamson, C.H.K., "Evolution of a Single Wake behind a Pair of Bluff Bodies," J. Fluid Mech., Vol.159, pp.1-18   DOI   ScienceOn
2 2003, Kang, S., "Characteristics of Flow over Two Circular Cylinders in a Side-by-Side Arrangement at Low Reynolds Numbers," Phys. Fluids, Vol.15, pp.2486-2498   DOI   ScienceOn
3 1998, Park, J., Kwon, K. and Choi, H., "Numerical Solutions of Flow Past a Circular Cylinder at Reynolds Numbers up to 160," KSME Int. J., Vol.12, pp.1200-1205   DOI
4 1996, Yamamoto, H. and Hattori, N., "Flow and Heat Transfer around a Single Row of Circular Cylinders," Heat transfer: Japanese research, Vol.25, pp.192-200   DOI
5 2006, Zhou, Y. and Yiu, M.W., "Flow Structure, Momentum and Heat Transport in a Two-Tandem-Cylinder Wake," J. Fluid Mech., Vol.548, pp.17-48   DOI   ScienceOn
6 1998, Pinol, Salvador and Grau, Francesc X., "Influence of the no-slip boundary condition on the prediction of drag, lift, and heat transfer coefficients in the flow past a 2-D cylinder," Numer. Heat Tranf. A-Appl., Vol.34, pp.313-330   DOI   ScienceOn
7 2004, Kim, J. and Choi, H., "An Immersed-Boundary Finite-Volume Method for Simulation of Heat Transfer in Complex Geometrics," KSME Int. J., Vol.18, pp.1026-1035
8 1989, Williamson, C.H.K., "Oblique and Parallel Modes of Vortex Shedding in the Wake of a Circular Cylinder at Low Reynolds Numbers," J. Fluid Mech., Vol.206, pp.579-627   DOI
9 1952, Eckert, E.R.G. and Soehngen, E., "Distribution of Heat-Transfer Coefficients around Circular Cylinders in Crossflow at Reynolds Numbers from 20 to 500," J. Heat Transf.-Trans. ASME, Vol.75, pp.343-347
10 2002, Buyruk, E., "Numerical Study of Heat Transfer Characteristics on Tandem Cylinders, Inline and Staggered Tube Banks in Cross-Flow of Air," Int. Commun. Heat Mass Transf., Vol.29, pp.355-366   DOI   ScienceOn
11 1985, Kim, J. and Moin, P., "Application of a Fractional-Step Method to Incompressible Navier-Stokes Equations," J. Comput. Phys., Vol.59, pp.308-323   DOI   ScienceOn
12 2001, Rosales, J.L., Ortega, A. and Humphrey, J.A.C., "A Numerical Simulation of the Convective Heat Transfer in Confined Channel Flow Past Square Cylinders: Comparison of Inline and Offset Tandem Pairs," Int. J. Heat Mass Transf., Vol.44, pp.587-603   DOI   ScienceOn