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Communication Dans Un Congrès Année : 2020

A numerical study on the entropy noise generated in sudden cross-sectional area changes

Juan Guzman-Inigo
  • Fonction : Auteur
Dong Yang
  • Fonction : Auteur
Aimee S. Morgans
  • Fonction : Auteur

Résumé

In this work, we investigate numerically the sound gen-erated when incoming entropy waves are decelerated in a sudden area expansion. To this end, we linearise the compressible Navier-Stokes equations around a turbulent meanflow. The mean flow is obtained as a solution of the RANS equations. The linearised equations are then solved in thefrequency domain to determine the acoustic variables. Fi-nally, the transmission and reflection coefficients are obtained and compared with the predictions of two different quasi-steady models
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Dates et versions

hal-03221408 , version 1 (20-05-2021)

Identifiants

Citer

Juan Guzman-Inigo, Dong Yang, R Gaudron, Aimee S. Morgans. A numerical study on the entropy noise generated in sudden cross-sectional area changes. eForum Acusticum, Dec 2020, Lyon, France. pp.379-381, ⟨10.48465/fa.2020.0816⟩. ⟨hal-03221408⟩
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