Abstract
The aim of this study is to investigate the effect of mass flow rate on film cooling effectiveness and heat transfer over a gas turbine rotor blade with three staggered rows of shower-head holes which are inclined at 30° to the spanwise direction, and are normal to the streamwise direction on the blade. To improve film cooling effectiveness, the standard cylindrical holes, located on the leading edge region, are replaced with the converging slot holes (console). The ANSYS CFX has been used for this computational simulation. The turbulence is approximated by a k-ε model. Detailed film effectiveness distributions are presented for different mass flow rate. The numerical results are compared with experimental data.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
U. Drost and A. Bölcs, Investigation of detailed film cooling effectiveness and heat transfer distributions on a gas turbine airfoil. ASME J. Turbomachinery, 1999, Vol. 121, P. 233–242.
H.D. Ammari, N. Hay, and D. Lampard, The effect of density ratio on the heat transfer coefficient from a filmcooled flat plate. ASME J. Turbomachinery, 1990, Vol. 112, P. 444–450.
A.K. Sinha, D.G. Bogard, and M.E. Crawford, Film-cooling effectiveness downstream of a single row of holes with variable density ratio. ASME J. Turbomachinery, 1991, Vol. 113, P. 442–449.
J.C. Han, S. Dutta, and S.V. Ekkad, Gas turbine heat transfer and cooling technology, Taylor & Francis, London, 2000.
A. Azzi, M. Abidat, and B.A. Jubran, Film cooling predictions of simple and compound angle injection from one and two staggered rows. Numerical Heat Transfer. Part A: Applications, 2001, Vol. 40, No. 3, P. 273–294.
A. Khorsi and A. Azzi, Computation film cooling from three different holes geometries. MECHANIKA, 2010), No. 6, P. 32–37.
J.E. Sargison, S.M. Guo, M.L.G. Oldfield, G.D. Lock, A.Y. Rawlinson, and D.Ch. Xu, A converging slot-hole film-cooling geometry. Part 2. Transonic nozzle guide vane heat transfer and loss, ASME J. Turbomachinery, 2002, Vol. 124, P. 461–471.
C.L. Liu, H.R. Zhu, J.T. Bai, and D.Ch. Xu, Film cooling performance of converging slot-hole rows on a gas turbine blade. Int. J. Heat Mass. Transf., 2010, Vol. 53, P. 5232–5241.
R.J. Goldstein, E.R.G. Eckert, H.D. Chiang, and E. Elovic, Effect of surface roughness on film cooling performance. ASME J. Engng Gas Turbines Power, 1985, Vol. 107, P. 111–116.
D.L. Schmidt and D.G. Bogard, Effects of free-stream turbulence and surface roughness on film cooling. ASME Paper, 1996), No. 96-GT–462.
D.L. Schmidt, B. Sen, and D.G. Bogard, Effects of surface roughness on film cooling. ASME Paper, 1996, No. 96-GT-299.
C.H.N. Yuen and R.F. Martinez-Botas, Film cooling characteristics of a single round hole at various streamwise angles in a crossflow. Part I. Effectiveness. Int. J. Heat Mass Transfer, 2003, Vol. 46, P. 221–235.
C.H.N. Yuen and R.F. Martinez-Botas, Film cooling characteristics of a single round hole at various streamwise angles in a crossflow. Part II. Heat transfer coefficients. Int. J. Heat Mass Transfer, 2003, Vol. 46, P. 237–249.
C.H.N. Yuen and R.F. Martinez-Botas, Film cooling characteristics of rows of round holes at various streamwise angles in a crossflow. Part I. Effectiveness. Int. J. Heat Mass Transfer, 2005, Vol. 48, P. 4995–5016.
C.H.N. Yuen and R.F. Martinez-Botas, Film cooling characteristics of rows of round holes at various streamwise angles in a crossflow. Part II. Heat transfer coefficients. Int. J. Heat Mass Transfer, 2005, Vol. 48, P. 5017–5035.
M.F. Blair, An experimental study of heat transfer in a large-scale turbine rotor passage. ASME J. Turbomachinery, 1994, Vol. 116, P. 1–13.
J. Ahn, M.T. Schobeiri, J.C. Han, and H.K. Moon, Film cooling effectiveness on the leading edge of a rotating turbine blade, ASME Paper No. IMECE. 2004-59852, 2004.
J. Ahn, M.T. Schobeiri, J.C. Han, and H.K. Moon, Film cooling effectiveness on the leading edge of a rotating film-cooled blade using pressure sensitive paint, ASME Paper No. GT-2005-68344, 2005.
W.D. York and J.H. Leylek, Leading-edge film-cooling physics. Part I. Adiabatic effectiveness, ASME Paper No. 2002-GT-30166, 2002.
W.D. York and J.H. Leylek, Leading-edge film-cooling physics. Part II. Heat transfer coefficient, ASME Paper No. 2002-GT-30167, 2002.
S.B. Islami, A. Tabrizi, B. Jubran, and E. Esmaeilzadeh, Influence of trenched shaped holes on turbine blade leading edge film cooling. Heat Transfer Engng, 2010, Vol. 31, No. 10, P. 889–906.
C. Camci and T. Arts, Experimental heat transfer investigation around the film-cooled leading edge of a highpressure gas turbine rotor blades. J. Engng Gas Turbine Power, 1985, Vol. 107, P. 1016–1021.
V.K. Garg, Effect of coolant temperature and mass flow on film cooling of turbine blades. Int. J. Heat and Fluid Flow, 1997, Vol. 40, No. 2, P. 435–445.
V.K. Garg, Heat transfer on a film cooled rotating blade using different turbulence models. Int. J. Heat and Fluid Flow, 1999. Vol. 42, P. 789–802.
V.K. Garg, Heat transfer on a film-cooled blade effect of hole physics. Int. J. Heat and Fluid Flow, 1999, Vol. 20, P. 10–25.
V.K. Garg, Comparison of predicted and experimental Nusselt number for a film cooled rotating blade. Int. J. Heat and Fluid Flow, 1997, Vol. 18, P. 452–460.
V.K. Garg, Heat transfer on a film-cooled rotating blade. Int. J. Heat and Fluid Flow, 2000, Vol. 21, P. 134–145.
V.K. Garg, Modeling film-coolant flow characteristics at the exit of shower-head holes. Int. J. Heat and Fluid Flow, 2001, Vol. 22, P. 134–142.
Y. Chengfenga and Z. Jingzhoub, Influence of multi-hole arrangement on cooling film development. Chinese J. Aeronautics, 2012, Vol. 25, P. 182–188.
R. Hasan and A. Puthukkudi, Numerical study of effusion cooling on an adiabatic flat plate. Propulsion and Power Research, 2013, Vol. 2, No. 4, P. 269–275.
I. Koc, C. Parmaksizoglu, and M. Cakan, Numerical investigation of film cooling effectiveness on the curved surface. Energy Conversion and Management, 2006, Vol. 47, P. 1231–1246.
M. Silieti, E. Divo, and A.J. Kassab, The effect of conjugate heat transfer on film cooling effectiveness. Numerical Heat Transfer. Part B, 2009, Vol. 56, P. 335–350.
S.V. Patankar and D.B. Spalding, A calculation procedure for heat. mass and momentum transfer in threedimensional parabolic flows, Int. J. Heat and Mass Transfer, 1972, Vol. 15, P. 1778–1806.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Guelailia, A., Khorsi, A. & Hamidou, M.K. Computation of leading edge film cooling from a CONSOLE geometry (CONverging Slot hOLE). Thermophys. Aeromech. 23, 33–42 (2016). https://doi.org/10.1134/S0869864316010042
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0869864316010042