Stability of Compressible Laminar Boundary Layer with Internal Heat Sources or Sinks

A solution of the equations of the compressible laminar boundary layer with heat sources or heat sinks is presented. The solution is limited to the flow over a flat plate with arbitrary surface temperature and constant Prandtl Number. I t is assumed that the additional mass associated with the heat sources or sinks is negligible. Stability calculations indicate that the boundary laj^er can be stabilized by heat withdrawal near the aircraft surface (e.g., by evaporation of liquid droplets) or by heat addition near the outer edge of the boundary layer (e.g., by condensation of a vapor). In addition, heat withdrawal near the surface is shown to provide an effective means of surface cooling.