Navier-Stokes prediction of large-amplitude delta-wing roll oscillations characterizing wing rockHigh-incidence vortical flow about a 65-deg sweep delta wing undergoing static roll and large-amplitude, high-rate-of-roll oscillations is simulated numerically using the time-dependent, three-dimensional, Reynolds-averaged, Navier-Stokes equations. Turbulent computations are presented for static roll angles up through 42 degrees. The effects of roll angle on the vortex aerodynamics are discussed, and the solution accuracy is evaluated by comparison with experimental data. The effects of grid refinement and zonal boundary condition treatment on solution accuracy are assessed at zero roll angle. Numerical simulation of a forced periodic roll motion is also presented.
Document ID
19920072728
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chaderjian, Neal M. (NASA Ames Research Center Moffett Field, CA, United States)