Browse Publications Technical Papers 2014-01-0601
2014-04-01

Aerodynamic Characterization of the Design Changes for the Facelift of the VW Bora 2014-01-0601

The recent facelift of the Chinese version of the VW Bora incorporated several changes of the styling of the upper body. In particular, front facia, A-Pillar and rear end were subject to design changes. As major effects on the aerodynamics performance were not expected, extensive wind tunnel testing for the upper body design changes was not included in the development plan except for final performance evaluation. Nevertheless, an aerodynamic study of the effects of the design changes was undertaken using a CFD based process. At the same time, the facelift offered the opportunity for reducing the aerodynamic drag by improving the underbody flow. The design of the engine undercover and the wheel spoilers were considered in this effort. For this purpose the CFD based aerodynamic study was extended to include respective design features. The whole study was carried out using a response surface method as a mathematical model to characterize and understand the effects of the design changes and their interactions. This approach allowed achieving best possible insight at a minimal effort. In addition, possible optima for the underbody optimization were identified. This helped to determine a possible trade-offs between cost and performance and also allowed a reduced effort in the wind tunnel for fine tuning the underbody design changes.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Combined Digital and Experimental Process for the Aerodynamic Optimization of the New Lavida

2013-01-0204

View Details

TECHNICAL PAPER

Optimization of the Underbody Layout of a Small Van for Better Aerodynamics Using Digital Simulation

2014-01-0574

View Details

TECHNICAL PAPER

Unsteady Vehicle Aerodynamics during a Dynamic Steering Action: 1st Report, On-Road Analysis

2012-01-0446

View Details

X