Aerodynamic Losses in Turbines with and without Film Cooling, as Influenced by Mainstream Turbulence, Surface Roughness, Airfoil Shape, and Mach Number

Figure 5

Profiles measured with 𝑀_𝑒,∞=0.9 and 𝑇𝑢=0.9% for the symmetric airfoil [8]. (a) Normalized local total pressure losses. (b) Normalized local Mach numbers. (c) Normalized local kinetic energy. (d) Ω total pressure loss coefficient.

(a)

(b)

(c)

(d)