The Significance of Roll on the Dynamics of Ground Vehicles Subjected to Crosswind Gusts by Two-Way Coupled Simulation of Aero- and Vehicle Dynamics
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Improvements in vehicle technologies in recent decades enable the use of lighter materials and the development of control systems for autonomous vehicles. However, these improvements lead to a need for better understanding of how flow phenomena affect crosswind stability of ground vehicles which will enable the design of the less wind-sensitive vehicles. Therefore, the present study investigates the significance of roll on the dynamics of ground vehicles subjected to crosswind gusts. It includes a multidisciplinary approach in which there is a two-way coupled simulation between aerodynamics and vehicle dynamics equations. As a result of the investigations, significant differences have been found between the computations considering no-roll and roll motions.
KeywordsGround vehicle aerodynamics Vehicle dynamics Crosswind IDDES Roll motion
The authors would like to thank the Centre for ECO2 Vehicle Design at KTH, funded by the Swedish Innovation Agency Vinnova (Grant Numbers 2016-05195 and 2017-03391); and the strategic research area TRENoP for their financial contributions to this work. The computations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at the PDC Center for High Performance Computing (PDC-HPC).
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