Publicado 18 números por año
ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561
Indexed in
COMPUTATIONAL INVESTIGATION OF CURVATURE EFFECTS ON JET IMPINGEMENT HEAT TRANSFER AT INTERNALLY COOLED TURBINE VANE LEADING EDGE REGIONS
SINOPSIS
This study is carried out by using numerical simulations to investigate the effect of target surface curvature and the nozzle-to-target surface distance on the flow structure and heat transfer characteristics in a pin-finned double-wall cooling structure. The flow is directly impinging on the target surface and is disturbed by the pin fins, and then released from the film holes after passing the double-wall chamber. The ratio between the radius of the concave outer surface and the chord length of the concave outer surface is varied from 0.500 to 1.300 and the ratio between nozzle-to-target surface distance and diameter of impingement hole is ranging from 0.5 to 2.0. The Reynolds number is between 10,000 and 50,000. Results of the flow structure in the chamber, heat transfer on the target surface, and friction factor of the pin-finned channel are included. It is found that an increase of the target surface curvature has significant effects on the flow structure and thus the heat transfer on the target surface is augmented. The Taylor-Gortler vortices near the pin fins are also influenced by the target surface curvature. On the other hand, the nozzle-to-target surface distance influences the jet impingement and the vortices, which are generated by the curvature, remarkably. It is found that the area goodness factor and volume goodness factor are improved by the surface curvature.
-
ANSYS CFX, Reference Guide, Release 15, Canonsburg, PA: ANSYS, 2013.
-
Brahma, R.K., Padhy, I., and Pradham, B., Prediction of Stagnation Point Heat Transfer for a Single Round Jet Impinging on a Concave Hemispherical Surface, Warme-und Stoffiibertragung, vol. 26, no. 1, pp. 41-48, 1990.
-
Bunker, R., Turbine Heat Transfer and Cooling: An Overview, ASME Paper No. GT2013-94174, 2013.
-
Bunker, R.S. and Metzger, D.E., Local Heat Transfer in Internally Cooled Turbine Airfoil Leading Edge Regions. Part I: Impingement Cooling without Film Coolant Extraction, ASME J. Turbomach., vol. 12, pp. 451-458, 1990.
-
Bunker, R.S. and Wallace, T.T., Turbine Airfoil with Double Shell Outer Wall. US Patent 5,328,331, filed June 28, 1993, and issued June 12, 1994.
-
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 Transf., vol. 43, no. 10, pp. 1811-1822, 2000.
-
Chupp, R.E., Helms, H.E., and McFadden, P.W., Evaluation of Internal Heat-Transfer Coefficients for Impingement-Cooled Turbine Airfoils, J. Aircr., vol. 6, pp. 203-208, 1969.
-
Cornaro . C., Fleischer, A.S., and Goldstein, R.J., Flow Visualization of a Round Jet Impinging on Cylindrical Surfaces, Exp. Therm. Fluid Sci., vol. 20, no. 2, pp. 66-78, 1999.
-
Dong, P., Wang, Q., Guo, Z., Huang, H., and Feng, G., Conjugate Calculation of Gas Turbine Vanes Cooled with Leading Edge Films, Chin. J. Aeronautics, vol. 22, pp. 145-152, 2009.
-
Ella, H.M.A.E., Kibsey, M., and Sjolander, S.A., Computational Study of a Transonic Turbine Cascade: Validation and Comparison of Griding Approaches and Challenges, ASME Paper No. GT2014-26630, 2014.
-
Fenot, M., Dorignac, E., and Vullierme, J.J., An Experimental Study on Hot Round Jets Impinging a Concave Surface, Int. J. Heat Fluid Flow, vol. 29, pp. 945-956, 2008.
-
Fregeau, M., Saeed, F., and Paraschivoiu, I., Numerical Heat Transfer Correlation for Array of Hot-Air Jets Impinging on 3-Dimensional Concave Surface, J. Aircraft Technol., vol. 42, no. 3, pp. 665-670, 2005.
-
Funazaki, K., Tarukawa, Y., Kudo, T., Matsuno, S., Imai, R., and Yamawaki, S., Heat Transfer Characteristics of an Integrated Cooling Configuration for Ultra-High Temperature Turbine Blades: Experimental and Numerical Investigations, ASME Paper No. 2001-GT-148, 2001.
-
Gau, C. and Chung, C.M., Surface Curvature Effect on Slot-Air-Jet Impingement Cooling Flow and Heat Transfer Process, ASME J. Heat Transf., vol. 113, pp. 858-864, 1991.
-
Gee, D.L. and Webb, R.L., Forced Convection Heat Transfer in Helically Rib-Roughened Tubes, Int. J. Heat Mass Transf., vol. 23, pp. 1127-1136, 1980.
-
Halder, P., Samad A., Kim, J.H., and Kim, K.Y., Film-Cooling Characteristics of Upstream Ramp Enhanced Turbine Blade Surface Cooling, Heat Transf. Res., vol. 48, no. 11, pp. 969-984, 2017.
-
Han, J.C. and Huh, M., Recent Studies in Turbine Blade Internal Cooling, Heat Transf. Res., vol. 41, no. 8, pp. 803-828, 2010.
-
Han, J.C. and Wright, L.M., Enhanced Internal Cooling of Turbine Blades and Vanes, Gas Turbine Handbook, vol. 4, pp. 1-5, 2006.
-
Harizi, A., Gahmousse, A., Mahfoudi, E.A., and Mameri, A., Numerical Simulation of Boundary Layer Transition for Turbine Blade Heat Transfer Prediction, Heat Transf. Res, vol. 48, no. 10, pp. 877-891, 2017.
-
Hong, S .K., Lee, D.H., and Cho, H.H., Heat/Mass Transfer Measurement on Concave Surface in Rotating Jet Impingement, J. Mech. Sci. Technol., vol. 22, no. 10, pp. 1952-1958, 2008.
-
Hrycak, P., Heat Transfer from a Row of Impinging Jets to Concave Cylindrical Surfaces, Int. J. Heat Mass Transf., vol. 24, no. 3, pp. 407-419, 1981.
-
Imbriale, M., Ianiro, A., Meola, C., and Cardone, G., Convective Heat Transfer by a Row of Jets Impinging on a Concave Surface, Int. J. Therm. Sci., vol. 75, pp. 153-163, 2014.
-
Jung, E. Y., Chan, U.P., Dong, H.L., Kim, K.M., and Cho, H.H., Effect of the Injection Angle on Local Heat Transfer in a Showerhead Cooling with Array Impingement Jets, Int. J. Therm. Sci., vol. 124, pp. 344-355, 2018.
-
Kayansayan, N. and Kujuka, S., Impingement Cooling of a Semi-Cylindrical Concave Channel by Confined Slot Air Jet, Exp. Therm. Fluid Sci., vol. 25, no. 6, pp. 383-396, 2001.
-
Kesarev, V. S. and Kozlov, A.P., Convective Heat Transfer in Turbulized Flow Past a Hemispherical Cavity, Heat Transf. Res., vol. 25, no. 2, pp. 156-160, 1993.
-
Kumar, B.V.N.R. and Prasad, B.V.S.S., Computational Flow and Heat Transfer of a Row of Circular Jets on Concave Surface, Heat Mass Transf., vol. 44, no. 6, pp. 667-678, 2008.
-
Langtry, R.B., Menter, F.R., Likki, S.R., Suzen, Y.B., Huang, P.G., and Volker, S., A Correlation-Based Transition Model Using Local Variables-Part II: Test Cases and Industrial Applications, ASME J. Turbomach., vol. 128, no. 3, pp. 423-434, 2006.
-
Lee, D.H., Chung, Y.S., and Won, S.Y., The Effect of Concave Surface Curvature on Heat Transfer from a Fully Developed Round Impinging Jet, Int. J. Heat Mass Transf., vol. 42, pp. 2489-2497, 1999.
-
Li, Y., Xie, P., Lan, J., and Zhang, D., Flow and Heat Transfer Characteristics of Single Jet Impinging on Dimpled Surface, ASME J. Heat Transf., vol. 135, no. 5, p. 052201, 2013.
-
Lu, S., Chi, Z., Wang, S., Wen, F., and Feng, G., Full Three-Dimensional Optimization Platform of Turbine Blades Considering the Film Cooling, ASME Paper No. GT2013-94092, 2013.
-
Luo, L., Du, W., Wang, S., Wu, W., and Zhang, X., Multi-Objective Optimization of the Dimple/Protrusion Channel with Pin Fins for Heat Transfer Enhancement, Int. J. Numer. Meth. Heat Fluid Flow, vol. 29, no. 2, pp. 790-813, 2018. DOI: 10.1108/HFF-05-2018-0194.
-
Luo, L., Sunden, B., and Wang, S., Optimization of the Blade Profile and Cooling Structure in a Gas Turbine Stage Considering Both the Aerodynamics and Heat Transfer, Heat Transf. Res., vol. 46, no. 7, pp. 599-629, 2015a.
-
Luo, L., Wang, C., Wang, L., Sunden, B., and Wang, S., A Numerical Investigation of Dimple Effects on Internal Heat Transfer Enhancement of a Double Wall Cooling Structure with Jet Impingement, Int. J. Numer. Meth. Heat Fluid Flow, vol. 26, no. 7, pp. 2175-2197, 2016.
-
Luo, L., Wang, C.L., Wang, L., Sunden, B., and Wang, S.T., Computational Investigation of Dimple Effects on Heat Transfer and Friction Factor in a Lamilloy Cooling Structure, J. Enhanced Heat Transf., vol. 22, pp. 147-175, 2015b.
-
Luo, L., Yan, H., Du, W., Wang, S., Li, C., and Zhang, X., Flow Structure and Heat Transfer Characteristics of a Rectangular Channel with Pin Fins and Dimples with Different Shapes, J. Therm. Sci. Eng. Appl., vol. 11, no. 2, pp. 024501, 2019.
-
Martin, E.L., Wright, L.M., and Crites, D.C., Impingement Heat Transfer Enhancement on a Cylindrical, Leading Edge Model with Varying Jet Temperatures, ASME J. Turbomach., vol. 135, no. 3, p. 031021, 2013.
-
Mayle, R.E., Blair, M.F., and Kopper, F.C., Turbulent Boundary Layer Heat Transfer on Curved Surfaces, ASME J. Heat Transf., vol. 101, no. 3, pp. 521-525, 1979.
-
Menter, F.R., Zonal Two Equation k-rn Turbulence Models for Aerodynamic Flows, AIAA Paper 93-2906, 1993.
-
Metzger, D.E., Balter, R.T., and Jenkins, C.W., Impingement Cooling Performance in Gas Turbine Airfoils Including Effects of Leading Edge Sharpness, ASME J. Eng. Power, vol. 94, pp. 219-225, 1972.
-
Oztekin, E., Aydin, O., and Avci, M., Heat Transfer in a Turbulent Slot Jet Flow Impinging on Concave Surfaces, Int. Commun. Heat Mass Transf., vol. 44, pp. 77-82, 2013.
-
Patil, V.S. and Vedula, R.P., Local Heat Transfer for Jet Impingement on a Concave Surface Including Injection Nozzle Length to Diameter and Curvature Ratio Effects, Exp. Therm. Fluid Sci., vol. 92, pp. 375-389, 2018.
-
Poitras, G.J., Babineau, A., Roy, G., and Brizzi, L.-E., Aerodynamic and Heat Transfer Analysis of an Impingement Jet on a Concave Surface, Int. J. Therm. Sci., vol. 114, pp. 184-195, 2017.
-
Siw, S.C., Miller, N., Chyu, M.K., and Alvin, M.A., Heat Transfer and Pressure Loss Characteristics of a Narrow Internal Cooling Passage at Low Reynolds Number, ASME Paper No. GT2014-27077, 2014.
-
Sunden, B., Introduction to Heat Transfer, Southampton, UK: WIT Press, 2012.
-
Thomann, H., Effect of Streamwise Wall Curvature on Heat Transfer in a Turbulent Boundary Layer, J. Fluid Mech., vol. 33, no. 2, pp. 283-292, 1968.
-
Versteeg, H.K. and Malalasekera, W., An Introduction to Computational Fluid Dynamics: The Finite Volume Method, Essex, UK: Longman Scientific and Technical, 1995.
-
Weigand, B. and Spring, S., Multiple Jet Impingement-A Review, Heat Transf. Res., vol. 42, no. 2, pp. 101-142, 2011.
-
Xie, P., Li, Y., Lan, J., and Zhang, D., Flow and Heat Transfer Characteristics of Single Jet Impinging on Dimpled Surface, ASME J. Heat Transf., vol. 135, no. 5, p. 052201, 2013.
-
Yang, G., Choi, M., and Lee, J.S., An Experimental Study of Slot Jet Impingement Cooling on Concave Surface: Effects of Nozzle Configuration and Curvature, Int. J. Heat Mass Transf., vol. 42, no. 12, pp. 2199-2209, 1999.
-
Luo Lei, Zhang Yifeng, Wang Chenglong, Wang Songtao, Sunden Bengt Ake, On the heat transfer characteristics of a Lamilloy cooling structure with curvatures with different pin fins configurations, International Journal of Numerical Methods for Heat & Fluid Flow, 31, 4, 2021. Crossref