This content is not included in your SAE MOBILUS subscription, or you are not logged in.
The Aerodynamic Development of a New Dongfeng Heavy Truck
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 29, 2015 by SAE International in United States
Annotation ability available
The development of a new Dongfeng Heavy truck had very strict targets for fuel consumption. As the aerodynamic drag plays a crucial role for the fuel consumption, a low drag value had to be achieved. It was therefore essential to include evaluation and optimization of the aerodynamics in the development process. Because wind tunnel facilities were not available, the complete aerodynamics development was based on digital simulation. The major portion of the aerodynamic optimization was carried out during the styling phase where mirrors, sun visor, front bumper and aero devices were optimized for drag reduction. For optimizing corner vanes and mud guards, self-soiling from the wheel spray was included in the analysis. The aero results did also show that cooling air flow rates are sufficiently high to ensure proper cooling. During the detailed engineering phase an increase of the drag above the target required further optimization work to finally reach the target. Furthermore it was confirmed during this phase with thermal simulations that the design of grille openings, cooling module and fan can meet engine cooling requirements.
CitationTang, K., He, L., Zhao, Y., Friz, H. et al., "The Aerodynamic Development of a New Dongfeng Heavy Truck," SAE Technical Paper 2015-01-2886, 2015, https://doi.org/10.4271/2015-01-2886.
- JT719-2008 Limits and measurement methods of fuel consumption for commercial vehicle for cargos transportation
- GB/T 27840-2011 Fuel consumption test methods for heavy-duty commercial vehicles
- Salari K. et al DOE Heavy Vehicle Systems Review April 18 20 2006
- Patten J. et al Review of Aerodynamic Drag Reduction Devices for Heavy Trucks and Buses NRC Technical Report May 11 2012
- Jiang , M. , Wu , H. , Tang , K. , Kim , M. et al. Evaluation and Optimization of Aerodynamic and Aero-Acoustic Performance of a Heavy Truck using Digital Simulation SAE Int. J. Passeng. Cars - Mech. Syst. 4 1 143 155 2011 10.4271/2011-01-0162
- Chen , H. et al. Extended Boltzmann Kinetic Equation for Turbulent Flows Science 301 2003 633 636
- Kotapati , R. , Keating , A. , Kandasamy , S. , Duncan , B. et al. The Lattice-Boltzmann-VLES Method for Automotive Fluid Dynamics Simulation, a Review SAE Technical Paper 2009-26-0057 2009 10.4271/2009-26-0057
- Yakhot , V , and Orszag , S. A. Renormalization Group Analysis of Turbulence, I. Basic Theory J. of Scientific Computing 1 1 51 1986
- Chen , H. , Orszag , S. , Staroselsky , I , and Succi , S. Expanded Analogy between Boltzmann Kinetic Theory of Fluid and Turbulence J. Fluid Mech. 519 2004 307 314
- Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics SAE Standard J2966
- Bear J. Dynamics of Fluids in Porous Media Dover Civil and Mechanical Engineering New York 1988