Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32131
A Numerical Study on Rear-spoiler of Passenger Vehicle

Authors: Xu-xia Hu, Eric T. T. Wong


The simulation of external aerodynamics is one of the most challenging and important automotive CFD applications. With the rapid developments of digital computers, CFD is used as a practical tool in modern fluid dynamics research. It integrates fluid mechanics disciplines, mathematics and computer science. In this study, two different types of simulations were made, one for the flow around a simplified high speed passenger car with a rear-spoiler and the other for the flow without a rear-spoiler. The standard k-ε model is selected to numerically simulate the external flow field of the simplified Camry model with or without a rear-spoiler. Through an analysis of the simulation results, a new rear spoiler is designed and it shows a mild reduction of the vehicle aerodynamics drag. This leads to less vehicle fuel consumption on the road.

Keywords: CFD, vehicle rear-spoiler design.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 4742


[1] Ridhwan Bin Che Zakem, Aerodynamics of Aftermarket Rear Spoiler, Malaysia Pahang University, 2008.
[2] Inchul Kim, Huailei Chen and Roger C. Shulze, "A Rear Spoiler of a New Type that Reduces the Aerodynamic Forces on a Mini-Van", SAE Techinical Paper Series, 2006-01-1631.
[3] ANSYS Fluent 12.0 Theory Guide, retrieved on July 26, 2011 from
[4] Retrieved on July 26, 2011from
[5] Jones, W. P. and Launder, B. E., The Prediction of Laminarization with a Two Equation Model of Turbulence, International Journal of Heat and Mass Transfer, 15, 301-314.1972.