Laminar Impinging Jet Heat Transfer for Curved Plates

Authors: A. M. Tahsini, S. Tadayon Mousavi

Abstract:

The purpose of the present study is to analyze the effect of the target plate-s curvature on the heat transfer in laminar confined impinging jet flows. Numerical results from two dimensional compressible finite volume solver are compared between three different shapes of impinging plates: Flat, Concave and Convex plates. The remarkable result of this study proves that the stagnation Nusselt number in laminar range of Reynolds number based on the slot width is maximum in convex surface and is minimum in concave plate. These results refuse the previous data in literature stating the amount of the stagnation Nusselt number is greater in concave surface related to flat plate configuration.

Keywords: Concave, Convex, Heat transfer, Impinging jet, Laminar flow.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1056705

References:

[1] Viskanta, R., "Heat Transfer to Impinging Isothermal Gas and Flame Jets," Experimental Thermal and Fluid Science, Vol. 6, pp. 111-134, 1993.
[2] Gardon, R., and Akfirat, J. C., "The Role of Turbulence in Determining the Heat transfer Characteristics of Impinging Jets," Int. J. Heat Mass Transfer, Vol. 8, pp. 1261-1272, 1965.
[3] Chiriac, V. C., and Ortega, A., "A Numerical Study of the Unsteady Flow and Heat Transfer in a Transitional Confined Slot Jet Impinging on an Isothermal Surface," Int. J. Heat Mass Transfer, Vol. 45, pp. 1237- 1248, 2002.
[4] Park, T.H., Ghoi, H.G., Yoo, J.Y., and Kim, S.J., "Streamline Upwind Numerical Simulation of Two-Dimensional Confined Impinging Slot Jets," Int. J. Heat Mass Transfer, Vol. 46, pp. 251-262, 2003.
[5] Lee, H.G., Yoon, H.S., Ha, M.Y., "A Numerical Investigation on the Fluid Flow and Heat Transfer in the Confined Impinging Slot Jet in the Low Reynolds Number Region for Different Channel Heights," Int. J. Heat Mass Transfer, Vol. 51, pp. 5055-4068, 2008.
[6] Lee, D., Park, H. J., and Ligrani, P., "Mill scale Confined Impinging Slot Jets: Laminar Heat Transfer Characteristics for an Isothermal Flat Plate," Int. J. Heat Mass Transfer, Vol. 55 pp. 2249-2260, 2012.
[7] Rady, M., and Arquis, E., "Heat Transfer Enhancement of Multiple Impinging Slot Jets with Symmetric Exhaust Ports and Confinement Surface Protrusions," Applied Thermal Engineering, Vol. 26, pp.1310- 1319, 2006.
[8] Kubacki, S., and Dick, E., "Simulation of Plane Impinging Jets with k-w Based Hybrid RANS/LES Models," Int. J. Heat Mass Transfer, Vol. 31, pp. 862-878, 2010.
[9] Jaramillo, J. E., Trias, F. X., Gorobets, A., Perez-Segarra, C. D., and Oliva, A., "DNS and RANS Modeling of a Turbulent Plane Impinging Jet," Int. J. Heat Mass Transfer, Vol. 55 pp. 789-801, 2012.
[10] Kayansayan, N., and Kucuka, S., "Impingement Cooling of a Semi- Cylindrical Concave Channel by Confined Slot-Air-Jet," Experimental Thermal and Fluid Science, Vol. 25, pp. 383-396, 2001.
[11] Rahman, M. M., and Hernandez, C. F., "Transient Conjugate Heat Transfer from a Hemispherical Plate during free Liquid Jet Impingement on the Convex Surface," Heat and Mass Transfer, Vol. 47, pp. 69-80, 2011.
[12] Choi, M., Yoo, H. S., Yang, G., Lee, J. S., and Sohn, D. k., "Measurements of Impinging Jet Flow and Heat Transfer on a Semi- Circular Concave Surface," Int. J. Heat Mass Transfer, Vol. 43 pp. 1811-1822, 2000.
[13] Yang, Y. T., Wei, T. C., and Wang, Y. H., "Numerical Study of Turbulent Slot Jet Impingement Cooling on a Semi-Circular Concave Surface," Int. J. Heat Mass Transfer, Vol. 54 pp. 482-489, 2011.
[14] Cornaro, C., Fleischer, A.S., and Goldestein, R.J., "Flow Visualization of a Round Jet Impinging on a Cylindrical Surfaces," Experimental Thermal and Fluid Science, Vol. 20 pp. 66-78, 1999.
[15] Liou, M. S., "A Sequel to AUSM: AUSM+," Journal of Computational Physics, Vol. 129, pp. 364-382, 1996.