This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Vehicle Cross Wind Air Flow Analysis
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 08, 1997 by SAE International in United States
Annotation ability available
CFD (Computational Fluid Dynamics) has been used to analyze vehicle air flow. In cross wind conditions an asymmetrical flow field around the vehicle is present. Under these circumstances, in addition to the forces present with symmetric air flow (drag and lift forces and pitching moment), side forces and moments (rolling and yawing) occur. Issues related to fuel economy, driveability, sealing effects (caused by suction exerted on the door), structural integrity (sun roof, spoiler), water management (rain deposit), and dirt deposit (shear stress) have been investigated. Due to the software developments and computer hardware improvements, results can be obtained within a reasonable time frame with excellent accuracy (both geometry and analytical solution). The flow velocity, streamlines, pressure field, and component forces can be extracted from the analysis results through visualization to identify potential improvement areas. It is concluded therefore that CFD is a practical tool to analyze the vehicle air flow field and to positively influence the design process.
|Technical Paper||Virtual Prototyping for Military Vehicle Acquisition|
|Technical Paper||Some Considerations in the Test Bogey Development for Automotive Components|
CitationShen, F., Backer, G., and Sparklin, S., "Vehicle Cross Wind Air Flow Analysis," SAE Technical Paper 971517, 1997, https://doi.org/10.4271/971517.
- “STAR-CD User Manual, Version 2.2” Computational Dynamics LTD. London 1994
- Hucho Wolf-Heinrich “Aerodynamics of Road Vehicles” 1987