Summary: Schaufelkühlung (Paper 5)
Gehrer, A., Woisetschläger, J., Jericha, H.
"Blade Film Cooling by
Underexpanded Transonic Jet Layers"
ASME Paper 97-GT-246
Schaufelkühlung (Paper 5)
The evolution of increasing turbine inlet temperature has
led to the necessity of full-coverage film cooling for the first turbine
vane and blade. A new approach using high speed wall jets for blade
cooling has been proposed by the authors. In this paper a 2-D
upwind-biased Navier-Stokes code is used to calculate the
aerodynamic behaviour of these surface coolant jets in a linear
cascade. Special emphasis is put on the investigation of the coolant
flow around the leading edge. Various numerical results concerning