TY - JOUR AB - In this work, we propose a cost-effective approach allowing one to evaluate the acoustic field generated by a turbulent jet. A turbulence-resolving simulation of an incompressible turbulent round jet is performed for a Reynolds number equal tothanks to the massively parallel high-order flow solver Incompact3d. Then a formulation of Lighthill's solution is derived, using an azimuthal Fourier series expansion and a compactness assumption in the radial direction. The formulation then reduces to a line source theory, which is cost-effective to implement and evaluate. The accuracy of the radial compactness assumption, however, depends on the Strouhal number, the Mach number, the observation elevation angle, and the radial extent of the source. Preliminary results are showing that the proposed method approaches the experimental overall sound pressure level by less than 4 dB for aft emission angles below 50°. AU - Laizet,S AU - Ioannou,V AU - Margnat,F DO - 10.1016/j.crme.2018.07.007 EP - 918 PY - 2018/// SN - 1631-0721 SP - 903 TI - A diagnostic tool for jet noise using a line-source approach and implicit large-Eddy simulation data T2 - Comptes Rendus Mécanique UR - http://dx.doi.org/10.1016/j.crme.2018.07.007 UR - http://hdl.handle.net/10044/1/58900 VL - 346 ER -