On LAGOON nose landing gear CFD/CAA computation over unstructured mesh using a ZDES approach.

Abstract : This paper is part of ONERA's effort to compute the noise generation around landing gears, effort that has been shown with studies on a variety of configurations such as the ones included inside the BANC-II (Benchmark problems for Airframe Noise Computations). In this case, the addressed geometry is the LAGOON baseline nose landing gear. On the present computation, a refined unstructured mesh is generated for resolving the boundary layer up to y+ around one. The simulation of the flow was performed using a Zonal Detached Eddy Simulation (ZDES) model, implemented inside ONERA's code CEDRE. The transient data obtained were used as input for a Ffowcs-Williams and Hawkings computation over the skin of the landing gear and on a porous surface around it, which was performed using ONERA's in-house code KIM. Both the aerodynamic and aeroacoustic results are compared with the experimental ones obtained at F2 and CEPRA19 test campaigns. The comparisons obtained show a good agreement in terms of mean field, wall pressure (mean and spectral content) and aeroacoustic far-field measurements.
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Submitted on : Wednesday, September 24, 2014 - 11:40:26 AM
Last modification on : Tuesday, March 26, 2019 - 2:24:03 PM
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F. de la Puente, L. Sanders, F. Vuillot. On LAGOON nose landing gear CFD/CAA computation over unstructured mesh using a ZDES approach.. AIAA AVIATION 2014 - 20th AIAA/CEAS Aeroacoustics Conference, Jun 2014, ATLANTA, United States. ⟨hal-01067878⟩

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