Solutions to higher-order boundary-layer equations for flow over a semi-infinite plate

Higher-order boundary layer equations for laminar flow over a semiinfinite plate derived from the BKG model of the Boltzmann equation are solved by successive approximation. The first and second order solutions are found to be identical to the higher order boundary layer solutions derived by successively solving the corresponding Navier-Stokes equations. However, the third order solutions are different. The new higher boundary layer equations predict a larger coefficient of skin friction.