Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
AEROACOUSTIC PREDICTION OF THE LAGOON LANDING GEAR
Submission Author:
Tulio Rodarte Ricciardi , SP
Co-Authors:
William Wolf, Tulio Rodarte Ricciardi
Presenter: Tulio Rodarte Ricciardi
doi://10.26678/ABCM.COBEM2017.COB17-0165
Abstract
This paper presents detached eddy simulations, DES, of the LAGOON landing gear configuration performed using different unstructured meshes. We employ the BCFD code for the DES calculations and results are compared to experimental measurements available in the literature. An implicit dual-time stepping method is employed together with an optimized second-order backward-differencing scheme. For the spatial discretization, a second order accurate HLLE scheme is employed together with a bounded central differencing approach to reduce numerical dissipation of the flux reconstruction. Results are presented in terms of steady and unsteady hydrodynamic data on the surface and along the wake. Finally, with the proper orthogonal decomposition, POD, of the unsteady flow field, it is possible to identify coherent energetic structures responsible for the noise generation at 1.5kHz observed in the experiments.
Keywords
Landing gear noise, Aeroacoustics, modal decomposition, reduced order model
