Solution to the binary diffusion laminar boundary-layer equations with second-order transverse curvature.

€ = Cp = Cv = •€/ = •a = D/T = Dfi = / = g = H = k = L — Le = p Pr T = •u = v = x = y = z = 0 = = X = p = p = A method of solving the laminar boundary-layer equations including the effect of secondorder transverse curvature is developed for hypersonic flow with mass injection of foreign gases into air. A transformation which combines the Probstein-Elliot and Levy-Lees transformations is used on the equations of continuity, momentum, energy, and diffusion, which are solved simultaneously with variable fluid properties by a numerical technique employing a large-scale computer. Thermodynamic and transport properties of mixtures of helium, argon, and carbon dioxide in air are developed for temperatures ranging from 50 to 3500°K. Numerical results for injection of helium, air, argon, and carbon dioxide are presented for flow at Mach 10, over an 18° cone of a pure air freestream having a Reynolds number per unit length of 329.15 in.1.