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http://dx.doi.org/10.6110/KJACR.2012.24.7.560

Numerical Study for Heat Transfer Characteristics Varying Cross-Sectional Shape of a Tube  

Park, Hun-Chae (Environmental and Energy Systems Research Division, Korea Institute of Machinery and Materials)
Choi, Hang-Seok (Department of Environmental Engineering, Yonsei University)
Kim, Seock-Joon (Environmental and Energy Systems Research Division, Korea Institute of Machinery and Materials)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.24, no.7, 2012 , pp. 560-566 More about this Journal
Abstract
Numerical study has been carried out to investigate heat transfer and pressure drop characteristics for streamlined shape tubes. The flow and thermal fields are investigated with varying diameter ratio of the tube ranging from 0.4 to 2.5 and Reynolds number ranging from 10,000 to 30,000. The results show that heat transfer per unit fan power is maximum at $D_2/D_1=0.8$. Furthermore, the heat transfer per unit fan power of streamlined shape tubes was compared with circular tube. The heat transfer per unit fan power of streamlined shape tube was larger than that of circular tube.
Keywords
Heat transfer; Pressure drop; CFD; Tube shape;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Nouri-Borujerdi, A. and Lavasani, A. M., 2007, Experimental study of forced convection heat transfer from a cam shaped tube in cross flows, Int. J. Heat and Mass Transfer, Vol. 50, pp. 2605-2611.   DOI
2 Talaat, A. I. and Gomaa, A., 2009, Thermal performance criteria of elliptic tube bundle in crossflow, Int. J. Thermal Sciences, Vol. 48, pp. 2148-2158.   DOI   ScienceOn
3 Yun, Y. Y. and Lee, W. Y., 2000, Heat transfer characteristics of oval-tube heat exchanger, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 12, pp. 292-301   과학기술학회마을
4 Wilcox, D. C., 2004, Turbulence modeling for CFD, DCW Industries, Inc. 2nd Ed.
5 CD-adapco, 2010, STAR-CCM+ user guide version 5.04, CD-adapco, New York.
6 Scholten, J. W. and Murray, D. B., 1998, Unsteady heat transfer and velocity of a cylinder in cross flow-I. Low free stream turbulence, Int. J. Heat and Mass Transfer, Vol. 41, pp. 1139-1148.   DOI   ScienceOn
7 Zukauskas, A., 1972, Heat transfer from tubes in crossflow, Advances in Heat Transfer, Academic Press, New York, Vol. 8, pp. 93-160.
8 Buyruk, E., 1999, Heat transfer and flow structures around circular cylinders in cross-flow, Tr. J. of Engineering and Environmental Science, Vol. 23, pp. 299-315.
9 Ramirez, C., Murray D. B., and Fitzpatrick, J. A., 2002, Convective heat transfer of an inclined rectangular plate, Experimental Heat Transfer, Vol. 15, pp. 1-18.   DOI