TURBULENT BOUNDARY-LAYERS WITH LARGE FREE-STREAM TO WALL TEMPERATURE RATIO

Turbulent boundary layers with free-stream temperatures between 300°K and 3000°K, and wall temperature 300°K is studied numerically for air at 1 bar. Solution is started at one plane for a laminar, local similar boundary layer by solving differential equations by Runge-Kutta method. Velocity and enthalpy profiles are obtained at downstream planes by an implicit finite-difference iterative procedure. Effects of free-stream Mach number, sudden acceleration or deceleration, surface roughness, and uniform blowing or suction through the wall are studied and numerical results are compared with those available in open literatures. © 1979 Springer-Verlag.