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Numerical Analysis of Air Flow and Conjugated Heat Transfer in Internally Grooved Parallel- Plate Channels
Abstract:A numerical investigation of surface heat transfer characteristics of turbulent air flows in different parallel plate grooved channels is performed using CFD code. The results are obtained for Reynolds number ranging from 10,000 to 30,000 and for arc-shaped and rectangular grooved channels. The influence of different geometric parameters of dimples as well as the number of them and the geometric and thermophysical properties of channel walls are studied. It is found that there exists an optimum value for depth of dimples in which the largest wall heat flux can be achieved. Also, the results show a critical value for the ratio of wall thermal conductivity to the one of fluid in which the dependence of wall heat flux to this ratio almost vanishes. In most cases examined, heat transfer enhancement is larger for arc-shaped grooved channels than rectangular ones.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1080949Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1530
 Ghaddar, N.K., Karczak, K.Z., Mikic, B.B., Patera, A.T., Numerical investigation of incompressible flow in grooved channels, Part 1. Stability and self-sustained oscillations, J. Fluid Mech.,163, 1986, pp. 99-127.
 Ghaddar, N.K., Megan, M., Mikic, B.B., Patera, A.T., Numerical investigation of incompressible flow in grooved channels, Part 2. Resonance and oscillatory heat-transfer enhancement, J. Fluid Mech.,168, 1986, pp. 541-567.
 Amon, C.H., Mikic, B.B., Numerical prediction of convective heat transfer in self-sustained oscillatory flows, J. Thermophys. Heat Transfer, Vol. 4, 1990, pp. 239-246.
 Amon, C.H., Heat transfer enhancement by flow destabilization in electronic chip configurations, J. Electron. Packag., Vol. 144, 1992, pp. 35-40.
 Fahanieh, B., Herman, C., Sunden B., Numerical and experimental analysis of laminar fluid flow and forced convection heat transfer in a grooved duct, Int. J. Heat Mass Transfer, Vol. 36, 1993, pp. 1609-1617.
 Bilen, K., Yapici, S., Heat transfer from a surface fitted with rectangular blocks at different orientation angle, Int. J. Heat Mass Transfer, Vol. 38, 2002, pp. 649-655.
 Herman, C., Kang, E., Heat transfer enhancement in a grooved channel with curved vanes, Int. J. Heat Mass Transfer, Vol. 45, 2002, pp. 3741- 3757.
 Tanda, T., Heat transfer in rectangular channels with transverse and Vshaped broken ribs, Int. J. Heat Mass Transfer, Vol. 47, No. 2, 2004, pp. 229-243.
 Chang, S.W., Liou, T.M., Chiang, K.F., Hong, G.F., Heat transfer and pressure drop in rectangular channel with compound roughness of Vshaped ribs and deepened scales, Int. J. Heat Mass Transfer, Vol. 51, 2008, pp. 52-67.
 Wang, L., Sunden, B., Experimental investigation of local heat transfer in a square duct with various-shaped ribs, Int. J. Heat Mass Transfer, Vol. 43, 2007, pp. 759-766.
 Ridouane, H., Campo, A., Heat transfer and pressure drop characteristics of laminar air flows moving in a parallel-plate channel with transverse hemi-cylindrical cavities, Int. J. Heat Mass Transfer, Vol. 50, 2007, pp. 3913-3924.
 Won, S.Y., Ligrani, P.M., Numerical predictions of flow structure and local Nusselt number ratios along and above dimpled surfaces with different dimple depths in a channel, Num. Heat Transfer, Vol. 46, 2004, pp. 549-570.
 Park, J., Desam, P.R., Ligrani, P.M., Numerical predictions of flow structure above a dimpled surface in a channel, Num. Heat Transfer, Vol. 45, 2004, pp. 1-20.
 Bilen, K., Cetin, M., Gul, H., Balta, T., The investigation of groove geometry effect on heat transfer for internally grooved tubes, Applied Thermal Engineering, Vol. 29, 2009, pp. 753-761.
 Incropera, F.P., De Witt, D.P., Fundamentals of Heat and Mass Transfer, fourth ed., Wiley, 1996.