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http://dx.doi.org/10.5293/IJFMS.2012.5.2.072

Computational Investigations of Impingement Heat Transfer on an Effused Concave Surface  

Kumar, M. Ashok (Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras)
Prasad, Bhamidi V.S.S.S. (Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras)
Publication Information
International Journal of Fluid Machinery and Systems / v.5, no.2, 2012 , pp. 72-90 More about this Journal
Abstract
A computational study is reported on flow and heat transfer characteristics from five rows of circular air jets impinging on a concave surface with four rows of effusion holes. The effects of exit configurations of spent air and the arrangement of jet orifices and effusion holes for a jet Reynolds number of 7500 is investigated. In all, eight cases are studied and a good qualitative correlation is found among their flow patterns, pressure variations and heat transfer distributions.
Keywords
Gas turbine blade cooling; Impingement cooling; Film holes; CFD;
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1 Lee, D. H., Chung, Y.S., and Won, S.Y., 1999, "The effect of concave surface on heat transfer from a fully developed round impinging jet," International journal of Heat and Mass Transfer, Vol. 42, No. 13, pp. 2489-2497.   DOI
2 Rhee, D. H., Choi, J. H., and Cho H. H., 2003, "Flow and Heat transfer characteristics in an Impingement/ Effusion cooling system with cross flow," Transaction of ASME Journal of Turbomachinery, Vol. 125, pp. 74-82.   DOI
3 Rhee, D. H., Yoon, P. H., and Cho, H. H., 2003, "Local heat/mass transfer and flow characteristics of array impinging jets with effusion holes ejecting spent air," International Journal of Heat and Mass Transfer, Vol. 46, pp. 1049-1061.   DOI   ScienceOn
4 Metzger, D.E., Yamashita, T., and Jenkins, C. W., 1969, "Impingement cooling of concave surfaces with lines of circular air jets," Transaction of ASME Journal of Engineering for Power, July, pp. 149-158.
5 Thomann, H., 1968, "Effect of stream wise wall curvature on heat transfer in a turbulent boundary layer," J. Fluid Mech., Vol. 33, No. 2, pp.283-292.   DOI
6 Tabakoff, W., and Clevenger, W., 1972, "Gas Turbine Blade Heat Transfer Augmentation by Impingement of Air jets Having Various Configurations," Transaction of ASME Journal of Engineering for Power, Jan, pp. 51-60.
7 Bunker, R.S., and Metzger, D.E., 1990, "Local Heat Transfer in Internally Cooled Turbine Airfoil Leading Edge Regions: Part I-Impingement Cooling Without Film Coolant Extraction," Transactions of the ASME Journal of Turbomachinery, Vol. 112, pp. 451-458.   DOI
8 Bunker, R.S., and Metzger, D.E., 1990, "Local Heat Transfer in Internally Cooled Turbine Airfoil Leading Edge Regions: Part II-Impingement Cooling With Film Coolant Extraction," Transactions of the ASME Journal of Turbomachinery, Vol. 112, pp. 459-467.   DOI
9 Taslim, M. E., and Khanicheh, A., 2006, "Experimental and Numerical study of Impingement on an Airfoil Leading edge with and without shower headed and gill film holes," Transaction of ASME Journal of Turbomachinery, Vol. 128, pp. 310-320.   DOI
10 Ramakumar, B. V. N., and Prasad, B. V. S. S. S., 2006, "Computational investigation of flow and heat transfer for a row of circular jets impinging on a concave surface," ASME Turbo Expo, GT 2006-90851.
11 Ramakumar, B. V. N., and Prasad, B. V. S. S. S., 2008, "Computational flow and heat transfer of a row of circular jets impinging on a concave surface," Heat and Mass Transfer, Vol. 44, No. 6, pp. 667- 678.   DOI
12 Ekkad, S. V., Huang, Y. and Han J. C., 1999, "Impingement Heat Transfer on a Target Plate with Film cooling Holes," AIAA Journal of Thermophysics and Heat Transfer, Vol. 13, No. 4, pp. 522-528.   DOI
13 Hollworth, B. R. and Dangan, L., 1980, "Arrays of Impinging Jets with spent fluid removal through vent holes on the target surface - Part I: Average Heat Transfer," Transactions of the ASME, Journal of Engineering for power, Vol. 102, pp. 994-999.   DOI
14 Hollworth, B. R., Lehmann, G., and Rosiczkowski J., 1983, "Arrays of Impinging Jets with spent fluid removal through vent holes on the target surface - Part II: Local Heat Transfer," Transactions of the ASME, Journal of Engineering for Power, Vol. 105, pp. 393-402.   DOI
15 Cho, H. H. and Rhee, D. H., 2001, "Local Heat/Mass Transfer Measurement on the Effusion Plate in Impingement/Effusion Cooling Systems," Journal of Turbomachinery, Vol. 123, pp. 601-608.   DOI   ScienceOn
16 Ashok Kumar, M., and Prasad, B.V.S.S.S., 2011, "Computational flow and heat transfer of multiple circular jets impinging on a flat surface with effusion holes," Heat Mass Transfer, Vol. 47, pp.1121-1132.   DOI