Enhanced mixing of multiple supersonic rectangular jets by synchronized screech

A unique set of data is presented on the effect of synchronized screech on the mixing of a linear array of underexpanded jets. Two other cases are provided for comparison. One case is the multijet array with suppressed screech and the other case is a single equivalent rectangular jet with screech. The synchronized screech multijet case produced the maximum mass-flux augmentation followed by the screech suppressed multijet and the screeching single equivalent jet.