[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5916/jkosme.2008.32.7.1003

A Numerical Study on Heat Transfer and Friction in Rectangular Channel with Inclined Perforated Baffles

Putra, Ary Bachtiar Krishna (Graduate School, Gyeongsang National University(on leave from Sepuluh Nopember Institute Technology)
Ahn, Soo-Whan (School of Mech. & Aerospace Eng., Institute of Marine Industry, Gyeongsang National University)
Kang, Ho-Keun (Korean Register of Shipping)

Publication Information

Journal of Advanced Marine Engineering and Technology / v.32, no.7, 2008 , pp. 1003-1012 More about this Journal

Abstract

A three dimensional numerical study has been applied to predict the turbulent fluid flow and heat transfer characteristics for the rectangular channel with different types of baffles. Four different types of the baffles are used. The inclined baffles have the width of 19.8 cm, the square diamond type hole having one side length of 2.55 cm, and the inclination angle of $5^{\circ}$ . Reynolds number is varied between 23,000 and 57,000. The SST k- ${\omega}$ turbulence model is used in the present numerical study. The validity of the numerical results is examined with the experimental data. The numerical results of the flow field depict that the flow patterns around the different baffle type are entirely different and it significantly affects the local heat transfer characteristics. The heat transfer and friction factor depend significantly on the number of baffle holes. It is found that the heat transfer enhancement of baffle type II (3 hole baffle) has the best values.

Keywords

Friction factor; Heat transfer; Perforated inclined baffle; Rectangular channel; Square diamond type hole;

Citations & Related Records

Reference

1	D. C. Wilcox, Turbulent modelling for CFD. 2nd ed., DCW Industries, 1998
2	W. M. Kays and M. E. Crawford, Convective heat and mass transfer, 2nd ed., McGraw-Hill, New York, 1990
3	P. Dutta and S. Dutta, "Effect of baffle size, perforation and orientation on internal heat transfer enhancement", Int. J. Heat Mass Transfer, Vol. 41, No. 19, pp. 3005-3013, 1988 DOI ScienceOn
4	Y. T. Yang and C. Z. Hwang, "Calculation of turbulent flow and heat transfer in a porous-baffled channel", Int. J. Heat Mass Transfer, Vol. 46, pp. 771-780, 2003 DOI ScienceOn
5	C. Berner, F. Durst, and D. M. McEligot, "Flow around baffles", ASME J. Heat Transfer, Vol. 106, pp. 743-749, 1984 DOI
6	S. J. Kline and F. A. McClintock, "Describing uncertainty in single sample experiments", Mechanical Engineering, Vol. 75, pp. 3-8, 1953
7	B. E. Launder and B. I. Sharma, "Application of the energy-dissipation model of turbulence to the calculation of flow near a spinning disc", Letters in Heat and Mass Transfer, Vol. 1, Issue 2, pp. 131-137, 1974 DOI ScienceOn
8	K. M. Kelkar and S. V. Patankar, "Numerical prediction of flow and heat transfer in parallel plate channel with staggered fins", Trans. ASME J. Heat Transfer, Vol. 109, pp. 25-30, 1987 DOI
9	Y. L Tsay, T. S. Chang, J. C. Cheng, "Heat transfer enhancement of backward-facing step flow in a channel by using baffle installed on the channel wall", Acta Mech., Vol 174, pp. 63-76, 2005 DOI
10	M. A. Habib, A. E. Attya, and D. M. McEligot, "Calculation of turbulent flow and heat transfer in channels with streamwise-periodic flow", Trans. ASME J. Turbomach., Vol. 110, pp. 405-411, 1988 DOI ScienceOn
11	M. A. Habib, A. M. Mobarak, M. A. Sallak, E. A. Abdel Hadi, and R. I. Affify, "Experimental investigation of heat transfer and flow over baffles of different heights", ASME J. Heat Transfer, Vol. 116, No. 2, pp. 363-368, 1994 DOI ScienceOn
12	B. W. Webb and S. Ramadhyani, "Conjugate heat transfer in a channel with staggered ribs", Int. J. Heat Mass Transfer, Vol. 28, pp. 1679-1687, 1985 DOI ScienceOn