TY - JOUR
T1 - ). Numerical prediction of cooling losses in a high-pressure gas turbine airfoil
AU - Montis, Marco
AU - Ciorciari, Roberto
AU - Salvadori, Simone
AU - Carnevale, Mauro
AU - Niehuis, Reinhard
PY - 2014/7/10
Y1 - 2014/7/10
N2 - Numerical investigations of the flow past a film-cooled nozzle guide vane cascade were conducted to determine the
influence of coolant ejection on profile loss. The film cooling on the suction surface as well as the trailing edge bleeding
was simulated at engine representative main flow Reynolds and Mach numbers, varying the coolant ejection rate.
Experiments carried out in a high-speed wind tunnel provided a comprehensive test case to verify the capability of
the numerical models to correctly reproduce the flow phenomena taking place in the vane passage. Results show that the
main features of the flow, such as aerodynamic loading, flow separation, and loss distribution in the wake of the airfoil can
be quite accurately predicted without excessive computational effort using a standard RANS SST model, which proved to
be a reliable and more adequate alternative to the widely used models based on simple control volume analysis.
AB - Numerical investigations of the flow past a film-cooled nozzle guide vane cascade were conducted to determine the
influence of coolant ejection on profile loss. The film cooling on the suction surface as well as the trailing edge bleeding
was simulated at engine representative main flow Reynolds and Mach numbers, varying the coolant ejection rate.
Experiments carried out in a high-speed wind tunnel provided a comprehensive test case to verify the capability of
the numerical models to correctly reproduce the flow phenomena taking place in the vane passage. Results show that the
main features of the flow, such as aerodynamic loading, flow separation, and loss distribution in the wake of the airfoil can
be quite accurately predicted without excessive computational effort using a standard RANS SST model, which proved to
be a reliable and more adequate alternative to the widely used models based on simple control volume analysis.
U2 - 10.1177/0957650914542630
DO - 10.1177/0957650914542630
M3 - Article
VL - 228
SP - 903
EP - 923
JO - Proceedings of the Institution of Mechanical Engineers , Part A: Journal of Power and Energy
JF - Proceedings of the Institution of Mechanical Engineers , Part A: Journal of Power and Energy
IS - 8
ER -