Detached-Eddy Simulations of the Effects of Different Wind Gust Models on the Unsteady Aerodynamics of Road Vehicles
2010 (English)In: ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels (FEDSM2010), 2010, 2605-2614 p.Conference paper (Refereed)
Therelative flexibility of nowadays simulation techniques offers an alternative wayto experiments in order to investigate unsteady crosswind aerodynamics inan industrial framework. In this study, time-accurate simulations, Detached-Eddy Simulations(DES), are used to simulate the flow around a simplevehicle shape, the so-called Windsor model. The ReL of thecorresponding flow case is 2.0 · 106. The influence ofdifferent deterministic models of wind gusts on the aerodynamic loadsand moments are studied. The wind gusts are varied inthe stream-wise and the vertical direction. The magnitude of thegusts models corresponds to a yaw angle of 20°. Theaerodynamic loads calculated show a large excess of drag coupledwith a reduction of the pitch moment. In addition, althoughthe side force has a smooth variation in the gust,overshoots up to 18% higher than the steady value ofyaw moment are also observed.
Place, publisher, year, edition, pages
2010. 2605-2614 p.
Vehicle Engineering Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-50487DOI: 10.1115/FEDSM-ICNMM2010-30454ISI: 000307365700290ScopusID: 2-s2.0-80055016238ISBN: 978-0-7918-4948-4OAI: oai:DiVA.org:kth-50487DiVA: diva2:462147
3rd Joint US-European Fluids Engineering Division Summer Meeting
QC 201112062011-12-062011-12-062013-06-11Bibliographically approved