Abstract:
The equations of the steady compressible two-dimensional laminar boundary
layer with foreign gas injection through a porous wall are solved, using an
extended form of Lighthill's approximate method, for arbitrary main stream
pressure gradient, wall temperature and injection velocity. The wall shear
stress and heat transfer rate are obtained in the form of equations suitable
for iteration.
It is shown that substantial reductions in skin friction and heat transfer rate
can be obtained by the injection of a light gas instead of air.
