Experimental study on the mean flow characteristics of a supersonic multiple jet configuration

Abstract Systems with multiple jets are encountered in many engineering applications, for example, propulsion units aircraft and rockets. When more than one jet is placed close to each other, the resultant aerodynamics complicated due mutual interaction of jets. In present work, mean flowfield mixing characteristics free supersonic from twin triple converging-diverging nozzles proximity studied experimentally. The designed Mach numbers 1.5 2.0, an inter-nozzle spacing twice nozzle exit diameter. typical process evolution discussed using cross-sectional contour plots. influence introducing additional similar on near such as jet-spread, core, shock wave structure pressure measurements along centerline. As number increases, spreading rate decreases a decrease entrainment. This causes decay at slow rate, core length increases order increased Schlieren images single, reveal that different when compared single jet.