Coupling of twin rectangular supersonic jets

Supersonic Jet Screech: Half-Century From Powell to the Present

“…Mode I (antisymmetric) coupling minimized the sound pressure levels in the inter-nozzle region whereas mode II coupling augmented it. The Raman and Taghavi [95] paper also provides a plausible explanation for how the jets choose a coupling mode and documents mode transition.…”

“…Coupled multi-jets in various con"gurations were also studied by Umeda and Ishii [120]. Recent work by Raman and Taghavi [95] focuses on fundamental mechanisms by assessing the steady and unsteady aspects of twin jet coupling. Two rectangular nozzles are placed side-by-side, with their narrow dimensions parallel and their long dimensions in the same plane.…”

“…SUPERSONIC JET SCREECH Figure 8. Phase-averaged near acoustic "eld in the yz plane for twin jets coupled in mode I (a,b) and mode II (c,d) (from Raman and Taghavi [95]). For each nozzle two phases of the screech cycle that are 1803 apart are shown.…”