Overset Grid Simulations for the 2nd AIAA Aeroelastic Prediction Workshop

Speaker: Jeffrey Housman, NAS Computational Aerosciences Branch, NASA Ames Research Center
February 14, 2017

Presentation

Seminar video is unavailable due to technical difficulties.

Abstract

Computational simulations for the 2nd AIAA Aeroelastic Prediction Workshop using the structured overset grid solver within the Launch Ascent and Vehicle Aerodynamics (LAVA) framework are presented. Three test cases from the workshop are considered: case (1a) steady-state transonic flow over the Benchmark Super Critical Wing (BSCW), case (1b) unsteady forced oscillation of the BSCW, and case (3a) unsteady transonic flow over the BSCW including shock/boundary-layer separation effects. A sequence of three structured overlapping grid systems, including coarse, medium, and fine grids have been generated for the BSCW and applied to the first two test cases. An additional very-fine mesh with grid clustering throughout the first quarter-chord of the upper surface was also generated and applied to case (1b). For case (3a), two additional overset grids were generated which are appropriate for hybrid RANS/LES simulation. Favorable comparisons between the computational simulations and experimental data were obtained for cases (1a) and (3a), results consistent with other workshop participants were achieved for case (1b). Sensitivity to the wing surface definition is also analyzed.

Biography

Jeffrey Housman received his Bachelor of Science in Mathematics from Sonoma State University in 2000 and his Ph.D. in Applied Mathematics from U.C. Davis in 2007. Jeff came to NASA Ames Research Center in 2001 and works with Cetin Kiris in the LAVA group in the Computational Aerosciences Branch. In LAVA, his work has been focused on developing a high-order high-performance structured overset curvilinear grid solver and far-field aeroacoustic propagation/scattering modules. Jeff has worked on a wide range of NASA mission related applications including launch vehicle takeoff and ascent analysis, aeroacoustic analysis of high-lift devices, and noise generation from propulsion systems such as open rotors and jets.

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