A transonic turbine stage is computed by means of an unsteady Navier–Stokes solver. A two-equation turbulence model is coupled to a transition model based on integral parameters and an extra transport equation. The transonic stage is modeled in two dimensions with a variable span height for the rotor row. The analysis of the transonic turbine stage with stator trailing edge coolant ejection is carried out to compute the unsteady pressure and heat transfer distribution on the rotor blade under variable operating conditions. The stator coolant ejection allows the total pressure losses to be reduced, although no significant effects on the rotor heat transfer are found both in the computer simulation and the measurements. The results compare favorably with experiments in terms of both pressure distribution and heat transfer around the rotor blade.
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July 1999
Research Papers
Unsteady Heat Transfer in Stator–Rotor Interaction by Two-Equation Turbulence Model
V. Michelassi,
V. Michelassi
Energetics Department “Sergio Stecco,” University of Florence, Florence, Italy
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F. Martelli,
F. Martelli
Energetics Department “Sergio Stecco,” University of Florence, Florence, Italy
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R. De´nos,
R. De´nos
Von Karman Institute for Fluid Dynamics, Rhode Saint Gene`se, Belgium
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T. Arts,
T. Arts
Von Karman Institute for Fluid Dynamics, Rhode Saint Gene`se, Belgium
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C. H. Sieverding
C. H. Sieverding
Von Karman Institute for Fluid Dynamics, Rhode Saint Gene`se, Belgium
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V. Michelassi
Energetics Department “Sergio Stecco,” University of Florence, Florence, Italy
F. Martelli
Energetics Department “Sergio Stecco,” University of Florence, Florence, Italy
R. De´nos
Von Karman Institute for Fluid Dynamics, Rhode Saint Gene`se, Belgium
T. Arts
Von Karman Institute for Fluid Dynamics, Rhode Saint Gene`se, Belgium
C. H. Sieverding
Von Karman Institute for Fluid Dynamics, Rhode Saint Gene`se, Belgium
J. Turbomach. Jul 1999, 121(3): 436-447 (12 pages)
Published Online: July 1, 1999
Article history
Received:
February 1, 1998
Online:
January 29, 2008
Citation
Michelassi, V., Martelli, F., De´nos, R., Arts, T., and Sieverding, C. H. (July 1, 1999). "Unsteady Heat Transfer in Stator–Rotor Interaction by Two-Equation Turbulence Model." ASME. J. Turbomach. July 1999; 121(3): 436–447. https://doi.org/10.1115/1.2841336
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