High speed driving stability of passenger car under crosswind effects

Kee, Jung-Do; Rho, Joo-Hyun; Kim, Kyu Hong; Lee, D. H.

doi:10.1007/s12239-014-0077-8

Cited by 23 publications

(11 citation statements)

References 9 publications

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“…Therefore, in general, effects of the unsteady aerodynamic forces on the vehicles are ignored. Hence, over the last century, as a result of the investigations on the vehicle aerodynamics, drag force has been decreased by 70%, but the yaw moment at crosswinds of 20 degrees has been increased by 150% (Kee et al, 2014). In fact, depending on dynamic properties of the vehicle and behaviour of the driver, transient aerodynamic excitations, such as caused by crosswind gusts, may be enhanced or damped (Wojciak, 2012).…”

Section: Introductionmentioning

confidence: 99%

On coupling methods used to simulate the dynamic characteristics of heavy ground vehicles subjected to crosswind

Tunay

Drugge

O’Reilly

2020

Journal of Wind Engineering and Industrial Aerodynamics

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Section: Introductionmentioning

confidence: 99%

On coupling methods used to simulate the dynamic characteristics of heavy ground vehicles subjected to crosswind

Tunay

Drugge

O’Reilly

2020

Journal of Wind Engineering and Industrial Aerodynamics

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“…For example, McArthur et al 2 and Pfeiffer and King 3 performed wind tunnel experiments, while other studies utilised on-road test methods. 4,5 However, the applicability and feasibility of experimental approaches have inherent limitations in some cases, such as being time-consuming and expensive. 6 Therefore, numerical simulation methods have become a valuable alternative, and are widely used to study vehicle stability under crosswind conditions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of vehicle stability under crosswind conditions based on coupling methods

Huang

Wan

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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In this study, vehicle stability under crosswind conditions is investigated. A two-way coupling method is established based on computational fluid dynamics and vehicle multi-body dynamics. Large eddy simulation is employed in the computational fluid dynamics model to compute the transient aerodynamic load, and the accuracy of the large eddy simulation is validated with a wind tunnel experiment. The arbitrary Lagrange–Euler technique is used in the computational fluid dynamics simulation to realise vehicle motion, and a real-time data transmission method is employed to ensure effective exchange of data between the computational fluid dynamics and multi-body dynamics models. The robustness of the two-way coupling model is verified by changing the position of the vehicle centroid. The results of the two-way and one-way coupling simulations demonstrate that crosswinds significantly affect vehicle stability. There is a clear difference between the results obtained with the two methods, particularly after the disappearance of the crosswind. The main reason for the difference is that the interaction between the transient airflow and the vehicle movement is considered in the two-way coupling method. Therefore, investigations of vehicle stability under crosswind conditions should consider the coupling of transient aerodynamic force and vehicle movement.

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“…Unsteady conditions with continuous yawing were studied with the wind tunnel configuration presented in [2], whereas the wind tunnel configuration used in [3,4] makes it possible to study the effects of crosswind gusts. Road tests and tests in facilities equipped with wind generator units are another form of investigation [5]. The use of numerical calculations not only makes it possible to study the effects of real-world wind conditions [6] but also makes it possible to investigate the aerodynamic properties of a vehicle in a steady-state crosswind [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of Side Spoilers on the Aerodynamic Properties of a Sports Car

Kurec

Piechna

2019

Energies

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This paper discusses the capabilities of side spoilers to improve the aerodynamic properties of a sports car exposed to a non-zero yaw angle flow. In such conditions, the aerodynamic drag and lift both increase with the introduction of a side force and a yawing moment, which contribute to the decrease of the car’s handling properties and force the car to change its driving path. Elements mounted on the side of the car make it possible to obtain an asymmetric aerodynamic load distribution and generate additional forces that can be used to counter these effects. The performance of the side spoilers was analyzed at yaw angles ranging from 0° to 15° using the results of numerical calculations. It was established that the side spoilers made it possible to generate at low yaw angles aerodynamic forces that exceeded those caused by a crosswind.

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High speed driving stability of passenger car under crosswind effects

Cited by 23 publications

References 9 publications

On coupling methods used to simulate the dynamic characteristics of heavy ground vehicles subjected to crosswind

On coupling methods used to simulate the dynamic characteristics of heavy ground vehicles subjected to crosswind

Investigation of vehicle stability under crosswind conditions based on coupling methods

Influence of Side Spoilers on the Aerodynamic Properties of a Sports Car

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