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PhD Defense: Carlos PÉREZ ARROYO – Large Eddy Simulations of a dual stream jet with shock-cells and noise emission analysis

  Wednesday 2 November 2016 at 14h00

  Phd Thesis       SALLE DE CONFÉRENCE JEAN-CLAUDE ANDRÉ    

Abstract :

This thesis deals with the shock-cell noise generated by under-expanded supersonic jets in single- and dual-stream configurations. Shock-cell noise is generated by the interaction between the turbulent structures of the shear-layer and the shock-cell system developed in the potential core of the jet. In order to study shock-cell noise, large eddy simulations adapted to aeroacoustics are carried out using high-order compact schemes that allow for a non-dissipative non-dispersive approach. The results are analyzed and compared to experimental results. In particular, an acoustic-hydrodynamic filtering is carried out in the near field in order to analyze the acoustic and hydrodynamic azimuthal modes. Moreover, a wavelet-based analysis is implemented in order to identify the relevant acoustic and hydrodynamic features of the supersonic jets.

Jury :
Christophe BAILLY   LMFA Rapporteur (Referee)
Paul TUCKER          Univeristy of Cambridge Rapporteur (Referee)
Yves GERVAIS         Institut PPRIME Examinateur (Member)
Xavier GLOERFELT ENSAM (DynFluid) Examinateur (Member)
Christophe AIRIAU   Univ. Paul Sabatier Directeur de thèse (Advisor)
Guillaume PUIGT     CERFACS co Directeur de thèse (co Advisor)

CALENDAR

Tuesday

12

November

2024

🎓Jérémy BRIANT thesis defense

Tuesday 12 November 2024From 10h00 at 12h00

  ENSEEIHT, Salle des Thèses C002    

Thursday

14

November

2024

Thursday

14

November

2024

🎓HDR Nicolas ODIER

Thursday 14 November 2024 at 14h00

  JCA room, Cerfacs, Toulouse, France    

ALL EVENTS