CFD Prediction of Magnus Effect in Subsonic to Supersonic Flight

Report No. ARL-TR-4929
Authors: James DeSpirito
Date/Pages: September 2009; 44 pages
Abstract: The aerodynamic coefficients of the 7-cal. U.S. Army-Navy Spinner Rocket were characterized using computational fluid dynamic (CFD) calculations and validated using archival experimental data. The static aerodynamic coefficients, roll-damping, and pitch-damping moments were accurately predicted by steady-state Reynolds-averaged Navier-Stokes (RANS) as well as unsteady hybrid RANS/large-eddy simulation (LES) CFD. The Magnus moment was overpredicted in the subsonic and transonic regime. Unsteady RANS/LES computations did not improve the prediction of Magnus moment at the lower Mach numbers. Both steady-state RANS and unsteady RANS/LES simulations resulted in similar predictions of all aerodynamic coefficients. Distributions of Magnus moment along the projectile body showed that the largest difference in Magnus moment between configurations and Mach numbers was in the last caliber of the projectile body.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2009