Mass transfer in the neighborhood of jets entering a crossflow

The mass-transfer coefficient in the neighborhood of a row of jets entering a cross flow is determined by measuring the local sublimation rate from a naphthalene surface. This mass transfer relates directly to the heat transfer that would occur on a film-cooled wall. The experiments indicate that jets significantly increase the transfer coefficient in the neighborhood of the holes through which the jets emanate-in particular, immediately adjacent to the holes and also some distance downstream of the centerlines of the holes.