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Large Eddy Simulation of Highly Compressible Jets with Tripped Boundary Layers

  • R. GojonEmail author
  • C. Bogey
  • M. Mihaescu
Conference paper
Part of the ERCOFTAC Series book series (ERCO, volume 25)

Abstract

In high-speed aircraft, supersonic jets used for propulsion can lead to very intense aerodynamically generated acoustic noise. Thus, there is a need to study the aerodynamic and aeroacoustic properties of highly compressible jets. In previous studies (Gojon et al, Temperature effects on the aerodynamic and acoustic fields of a rectangular supersonic jet, 2017, [1], Gojon et al, On the response of a rectangular supersonic jet to a near-field located parallel flat plate, 2017, [2]), several simulations of supersonic jets have been conducted. Unfortunately, the turbulence intensity at the nozzle exit was dependent on the internal geometry of the nozzle and could not be tuned. This is a pity given that, as shown experimentally (Zaman, AIAA J, 50(8):1784–1795, 2012, [3]) and numerically (Bogey et al, J Fluid Mech, 701:352–385, 2012, [4], Brés et al, Nozzle wall modeling in unstructured large eddy simulations for hot supersonic jet predictions, 2013, [5]) for subsonic and supersonic jets, the boundary layer state of the jet affects the jet flow and noise.

Notes

Acknowledgements

The computations were performed using HPC resources provided by the Swedish National Infrastructure for Computing (SNIC) at the PDC center.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of MechanicsRoyal Institute of Technology (KTH), Linné FLOW CentreStockholmSweden
  2. 2.Laboratoire de Mécanique des Fluides et d’Acoustique, UMR CNRS 5509EcullyFrance

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