Prediction and modelling coherent structures and noise radiation of supersonic twin jets

  • Rodriguez, Daniel (Universidad Politecnica de Madrid)
  • Padilla-Montero, Ivan (Universidad Politecnica de Madrid)

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The large-scale coherent structures present in high-speed turbulent jets are modelled for round nozzle twin-jet configurations at supersonic conditions based on industrial-type RANS simulations and plane-marching parabolised stability equations (PSE). These relatively inexpensive models predict jet-jet coupling, oscillation modes and mixing noise radiation directivity in agreement with experimental observations.