Aerodynamic characteristics of inclined flat plates immersed in a turbulent free mixing layer

Pressure distributions along the surface of inclined flat plates immersed in a turbulent plane mixing layer, which resulted from the mixing of a uniform flow with the same fluid at rest, were measured in order to clarify the time-averaged aerodynamic forces acting on the plates together with the flow pattern around them. The Reynolds number based on the height h of the plate and the main-stream velocity U outside the mixing layer was in the range (3.31-5.71) x 10 to the 4th. The stagnation-pressure coefficient and the normal force coefficient were found to be well correlated with a parameter h/delta, where delta is the width of the mixing layer, for assigned values of the angle of attack and the ratio u sub c/U, u sub c being the velocity of the otherwise undisturbed mixing layer.