Influence of a longitudinal pressure gradient on the effectiveness of a gas mist in a subsonic turbulent boundary layer

Investigations of effective methods of heat-shielding surfaces subjected to the effect of a high-temperature gas stream remain vital at the present time. One of the most prospective methods is that of injecting cooling gas through permeable section of a surface. In estimating the efficiency of such a method it is quite important to take account of the heat-shielding properties of the “cold” boundary layer downstream of the permeable section, i.e., in the gasmist domain. The question of the effect of a longitudinal pressure gradient on the efficiency of such a mist has not received a final solution.