2134/15959
Joshua Fuller
Joshua
Fuller
Matt Best
Matt
Best
Nikhil J.I. Garrett
Nikhil J.I.
Garrett
Martin Passmore
Martin
Passmore
The importance of unsteady aerodynamics to road vehicle dynamics
Loughborough University
2014
Unsteady aerodynamics
Vehicle dynamics
Driver model
Crosswinds
Vehicle handling
Mechanical Engineering
Engineering not elsewhere classified
2014-10-01 14:06:02
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/The_importance_of_unsteady_aerodynamics_to_road_vehicle_dynamics/9224084
This paper investigates the influence that different unsteady aerodynamic components have on a vehicle's handling. A simulated driver and vehicle are subject to two time-dependent crosswinds, one representative of a windy day and the second an extreme crosswind gust. Initially a quasi-static response is considered and then 5 additional sources of aerodynamic unsteadiness, based on experimental results, are added to the model.
From the simulated vehicle and driver, the responses are used to produce results based on lateral deviation, driver steering inputs and also to create a ‘subjective’ handling rating. These results show that the largest effects are due to the relatively low frequency, time-dependent wind inputs. The additional sources of simulated unsteadiness have much smaller effect on the overall system and would be experienced as increased wind noise and reduced refinement rather than a worsening of the vehicle's handling