Adaptive computation of aeroacoustic sources for a rudimentary landing gear using lighthill's analogy
2011 (English)In: 17th AIAA/CEAS AeroacousticsConference 2011: 32nd AIAA Aeroacoustics Conference, 2011Conference paper (Refereed)
We present our simulation results for the benchmark problem of the ow past a Rudimentary Landing Gear (RLG) using a General Galerkin (G2) nite element method, also referred to as Adaptive DNS/LES. In G2 no explicit subgrid model is used, instead the compuational mesh is adaptively re ned with respect to an a posteriori error es-timate of a quantity of interest in the computation, in this case the drag force on the RLG. Turbulent boundary layers are modeled using a simple wall layer model with the shear stress at walls proportional to the skin friction, which here is assumed to be small and, therefore, can be approximated by zero skin friction. We compare our results with experimental data and other state of the art computations, where we nd good agreement in sound pressure levels, surface velocities and ow separation. We also compare with detailed surface pressure experimental data where we nd largely good agreement, apart from some local dierences for which we discuss possible explanations.
Place, publisher, year, edition, pages
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-68735ScopusID: 2-s2.0-84883113997OAI: oai:DiVA.org:kth-68735DiVA: diva2:485251
32nd AIAA Aeroacoustics Conference. Portland, Oregon, USA. 5 – 8 June 2011
QC 201204162012-01-282012-01-282014-09-12Bibliographically approved