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Heat Transfer and Friction Characteristics Optimization with Compound Turbulators in Roughened Ducts

Published online by Cambridge University Press:  05 May 2011

R. Kamali  and
A. R. Binesh
R. Kamali*
Affiliation:
Department of Mechanical Engineering, Shiraz University, Zand Street, School of Engineering, Shiraz, Iran, 71348–51154
A. R. Binesh*
Affiliation:
Department of Mechanical Engineering, Shiraz University, Zand Street, School of Engineering, Shiraz, Iran, 71348–51154
*
* Assistant Professor
** Master of Science
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Abstract

The use of artificial roughness or turbulence promoters on a surface is an effective technique to enhance the rate of heat transfer of the fluid flowing in a duct. In this study, a computer code has been developed to perform a numerical simulation for optimizing the shape of two-dimensional channel with periodic ribs mounted on the bottom wall to enhance turbulent heat transfer. The Reynolds-Averaged Navier-Stokes analysis is used as a numerical technique and the SST k-(ω) turbulent model with near-wall treatment as a turbulent model. The simulations were performed for two rib shapes, trapezoidal with decreasing height in the flow direction with and without grooves between the ribs. The results are validated by comparing with existing experimental data and semi-empirical correlations. The Reynolds number, pitch-to-rib high ratio and relative groove position are chosen as design variables. The effects of roughness parameters on Nusselt number and friction factor have been discussed and the conditions for the best performance have been determined and presented.

Keywords

Heat transfer enhancementRoughened ductsCFDRANS equations
Type
Articles
Information
Journal of Mechanics , Volume 25 , Issue 3 , September 2009 , pp. 271 - 278
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2009

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References

1.Dipprey, D. F. and Sabersky, R. H., “Heat and Momentum Transfer in Smooth and Rough Tubes at Various Prandtl Numbers,” Int. J. Heat Mass Transfer, 6, pp. 329–353 (1963).CrossRefGoogle Scholar
2.Webb, R. L., Eckert, E. R. G. and Goldstein, R. J., “Heat Transfer and Friction in Tubes with Repeated Rib Roughness,” Int. J. Heat Mass Transfer, 14, pp. 601–617 (1971).CrossRefGoogle Scholar
3.Zhang, Y. M., Gu, W. Z. and Han, J. C., “Heat Transfer and Friction in Rectangular Channel with Ribbed or Ribbed-Grooved Walls,” ASME/J. Heat Transfer, 116, pp. 58–65 (1994).CrossRefGoogle Scholar
4.Park, J. C., Han, Y., Huang, S. Ou and Boyle, R. J., “Heat Transfer Performance of Five Different Rectangular Channels with Parallel Angled Ribs,” Int. J. Heat Mass Transfer, 35, pp. 2891–2903 (1992).CrossRefGoogle Scholar
5.Wang, L. and Sundén, B, “Experimental Investigation of the Effect of Rib Shape on Local Heat Transfer in a Square Duct by means of Liquid Crystal Thermography,” 6th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics (2005).Google Scholar
6.Hong, Y. J. and Hsieh, S. S., “Heat Transfer and Friction Factor Measurements in Ducts with Staggered and In-Line Ribs.,” ASME J. Heat Transfer, 115, pp. 58–65 (1993).CrossRefGoogle Scholar
7.Rau, J., Cakan, G., Moeller, M. and Arts, D. T., “The Effect of Periodic Ribs on the Local Aerodynamic and Heat Transfer Performance of a Straight Cooling Channel,” ASME J. Turbomachinery, 120, pp. 368–375 (1998).CrossRefGoogle Scholar
8.Taslim, M. E., Li, T. and Kercher, D. M., “Experimental Heat Transfer and Friction in Channels Roughened with Angled, VShaped, and Discrete Ribs on Two Opposite Walls,” ASME J. Turbomachinery, 118, pp. 20–28 (1998).CrossRefGoogle Scholar
9.Taslim, M. E. and Wadsworth, C. M., “An Experimental Investigation of the Rib Surface-Averaged Heat Transfer Coefficient in a Rib — Roughened Square Passage,” ASME J. Turbomachinery, 120, pp. 564–570 (1997).CrossRefGoogle Scholar
10.Murata, A. and Mochizwki, S., “Comparison Between Laminar and Turbulent Heat Transfer in a Stationary Square Duct with Transverse or Angled Rib Turbulators,” Int. J. Heat Mass Transfer, 44, pp. 1127–1141 (2001).CrossRefGoogle Scholar
11.Astarita, T. and Cardone, G., “Convective Heat Transfer in a Square Channel with Angled Ribs on Two Opposite Walls,” Experiments in Fluids, 34, pp. 625–634 (2003).CrossRefGoogle Scholar
12.Chandra, P. R., Alexander, C. R. and Han, J. C., “Heat Transfer and Friction Behaviors in Rectangular Channels with Varying Number of Ribbed Walls,” Int. J. Heat Mass Transfer, 46, pp. 481–495 (2003).CrossRefGoogle Scholar
13.Won, S. Y., Mahmood, G. I. and Ligrani, P. M., “Flow Structure and Local Nusselt Number Variations in a Channel with Angled Cross-Rib Turbulators.” Int. J. Heat Mass Transfer, 46, pp. 3153–3166 (2003).CrossRefGoogle Scholar
14.Lockett, J. F. and Hwang, J. J., “Holographic Interferometry Applied to Rib-Roughness Heat Transfer in Turbulent Flow,” Int. J. Heat Mass Transfer, 33, pp. 2439–2449 (1990).CrossRefGoogle Scholar
15.Han, J. C., Glicksman, L. R. and Rohsenow, W. M., “An Investigation of Heat Transfer and Friction for RibRoughened Surfaces,” Int. J. Heat Mass Transfer, 21, pp. 1143–1156.CrossRefGoogle Scholar
16.Liou, T. M. and Hwang, J. J., “Effect of Ridge Shapes on Turbulent Heat Transfer and Friction in Rectangular Channel,” Int. J. Heat Mass Transfer, 36, pp. 931–940 (1993).CrossRefGoogle Scholar
17.Arman, B. and Rabas, T. J., “Disruption Shape Effect on the Performance of Enhanced Tubes with the Separation and Reattachment Mechanism,” ASME Symposium, HTD-202, Enhanced Heat Transfer, pp. 67–75 (1992).CrossRefGoogle Scholar
18.Chadra, P. R., Fontenot, M. L. and Han, J. C., “Effect of Rib Profiles on Turbulent Channel Flow Heat Transfer,” AIAA J. Thermophysics and Heat Transfer, 12, pp. 116–118 (1998).CrossRefGoogle Scholar
19.Ahn, S. W., “The Effect of Roughness Type on Friction Factors and Heat Transfer in Roughened Rectangular Duct,” Int. Comm. Heat Mass Transfer, 28, pp. 933–942 (2001).CrossRefGoogle Scholar
20.Graham, A., Sewall, E. and Thole, K. A., “Flowfield Measurements in a Ribbed Channel Relevant to Internal Turbine Blade Cooling,” Proceedings of the ASME Turbo Expo, Vienna, Austria, ASME Paper No. GT2004-53361 (2004).CrossRefGoogle Scholar
21.Liou, T.-M., Chang, Y. and Hwang, D.-W., “Experimental and Computational Study of Turbulent Flows in a Channel with Two Pairs of Turbulence Promoters in Tandem,” ASME Journal of Fluids Engineering, 112, pp. 302–310 (1990).CrossRefGoogle Scholar
22.Zhao, C. Y. and Tao, W. Q., “A Three Dimensional Investigation of Turbulent Flow and Heat Transfer Around Sharp 180-Deg Turns in Twopass Rib-Roughened Channels,” International Communications in Heat and Mass Transfer, 24, pp. 587–596 (1997).CrossRefGoogle Scholar
23.Ooi, A., Iaccarino, G., Durbin, P. A. and Behnia, M., “Reynolds Averaged Simulation of Flow and Heat Transfer in Ribbed Ducts,” International Journal of Heat and Fluid Flow, 23, pp. 750–757 (2002).CrossRefGoogle Scholar
24.Liou, T.-M., Hwang, J.-J. and Chen, S.-H., “Simulation and Measurement of Enhanced Turbulent Heat Transfer in a Channel with Periodic Ribs on One Principal Wall,” International Journal of Heat and Mass Transfer, 36, pp. 507–517 (1993).CrossRefGoogle Scholar
25.Sleiti, A. K. and Kapat, J. S., “Comparison Between EVM and RSM Turbulence Models in Predicting Flow and Heat Transfer in Rib Roughened Channels,” Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference, Charlotte, North Carolina, USA, ASME Paper HT-FED04-56250 (2004).CrossRefGoogle Scholar
26.Layek, A. et al. , “Heat Transfer and Friction Characteristics for Artificially Roughened Ducts with Compound Turbulators,” Heat Mass Transfer, doi: 10.1016/j. ijheatmasstransfer (2007).CrossRefGoogle Scholar
27.Bhatti, M. S. and Shah, R. K., Turbulent and Transitional Flow Convective Heat Transfer, Hand Book of Single-Phase Convection Heat Transfer, Chapter 4, John Wiley and Sons, New York (1987).Google Scholar
28.Terekhov, V. I., Yaryina, N. I. and Zhdanov, R. F., “Heat Transfer in Turbulent Separated Flows in the Presence of High Free-Stream Turbulence,” Int. J. Heat Mass Transfer, 46, pp. 4535–4551 (2003).CrossRefGoogle Scholar