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Korean Journal of Chemical Engineering, Vol.32, No.11, 2187-2203, 2015
Flow and heat transfer characteristics in a channel having furrowed wall based on sinusoidal wave
The effect of wall geometry on the flow and heat transfer in a channel with one lower furrowed and an upper flat wall kept at a uniform temperature is investigated by large eddy simulation. Three channels, one with sinusoidal wavy surface having the ratio (amplitude to wavelength) α/λ=0.05 and the other two with furrowed surface derived from the sinusoidal curve, are considered. The numerical results show that the streamwise vortices center is located near the lower wall and vary along the streamwise on various furrow surfaces. The furrow geometry increases the pressure drag and decreases the friction drag of the furrowed surface compared with that of the smooth surface; consequently, the total drag is increased for the augment of pressure drag. As expected, the heat transfer performance has been improved. Finally, a thermal performance factor is defined to evaluate the performance of the furrowed wall.
[References]
- Phan C, Holgate DL, Griffin GJ, Korean J. Chem. Eng., 20(6), 1012, 2003
- Sawyers DR, Sen M, Chang HC, Int. J. Heat Mass Transf., 41(22), 3559, 1998
- Naphon P, Energy Conv. Manag., 48(5), 1516, 2007
- Chang SW, Lees AW, Chou TC, Int. J. Heat Mass Transf., 52(19-20), 4592, 2009
- Elshafei EAM, Awad MM, El-Negiry E, Ali AG, Energy, 35(1), 101, 2010
- Burns JC, Parks T, J. Fluid Mech., 29, 405, 1967
- Goldstein L, Sparrow EM, J. Heat Transf. -Trans. ASME, 99, 187, 1977
- Zilker DP, Cook GW, Hanratty TJ, J. Fluid Mech., 82, 29, 1977
- Zilker DP, Hanratty TJ, J. Fluid Mech., 90, 257, 1979
- Kruse N, Von Rohr PR, Int. J. Heat Mass Transf., 49(19-20), 3514, 2006
- Kuhn S, von Rohr PR, Int. J. Heat Fluid Flow, 29, 94, 2008
- Maaβ C, Schumann U, In: Hirschel EH(Ed.), Flow simulation with high performance computers, Notes on Numerical Fluid Mechanics, 52, 227 (1996).
- Choi HS, Suzuki K, Int. J. Heat Fluid Flow, 26, 681, 2005
- Kuhn S, Kenjeres S, von Rohr PR, Int. J. Therm. Sci., 49, 1209, 2010
- Wang CC, Chen CK, Int. J. Heat Mass Transf., 45(12), 2587, 2002
- Park TS, Sung HJ, Suzuki K, Int. J. Heat Fluid Flow, 24, 29, 2003
- Park TS, Choi HS, Suzuki K, Int. J. Heat Mass Transf., 47(10-11), 2403, 2004
- Dellil AZ, Azzi A, Jubran BA, Heat Mass Transf., 40, 793, 2004
- Yoon HS, El-Samni OA, Huynh AT, Chun HH, Kim HJ, Pham AH, Park IP, Ocean Eng., 36, 697, 2009
- Naphon P, Int. Commun. Heat Mass Transf., 36, 942, 2009
- Hafez KA, Elsamni OA, Zakaria KY, Alex. Eng. J., 50, 145, 2011
- Barboy S, Rashkovan A, Ziskind G, Int. J. Heat Mass Transf., 55(13-14), 3576, 2012
- Jimenez J, Moin P, J. Fluid Mech., 225, 213, 1991
- Kim J, Moin P, Moser R, J. Fluid Mech., 177, 133, 1987
- Lilly DK, Phys. Fluids, 4, 633, 1992
- Deardoff JW, J. Fluid Mech., 41, 465, 1970
- Kader B, Int. J. Heat Mass Transf., 43, 1541, 1981
- Patankar SV, Spalding DB, Int. J. Heat Mass Transf., 15, 1787, 1972
- Dean RB, J. Fluid Eng., 100, 215, 1987
- Incropera FP, Dewitt DP, Fundam. Heat Mass Transfer, Wiley, New York (1996).
- Chong MS, Perry AE, Cantwell BJ, Phys. Fluids A, 2, 765, 1990
- Hunt JCR, Wray AAA, Moin P, Proceedings of the summer program of center for turbulence research, United States of America (1988).
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