text: Source:
  Here Falkner–Skan boundary layer with a specified specific enthalpy  at the wall is studied. The density , viscosity  and thermal conductivity  are no longer constant here. In the low Mach number approximation, the equation for conservation of mass, momentum and energy become
  where  is the Prandtl number with suffix  representing properties evaluated at infinity. The boundary conditions become
  Unlike the incompressible boundary layer, similarity solution can exists for only if the transformation
  holds and this is possible only if .