Progress in Reducing Aerodynamic Drag for Higher Efficiency of Heavy Duty Trucks (Class 7-8) 1999-01-2238
This paper describes research and development for reducing the aerodynamic drag of heavy vehicles by demonstrating new approaches for the numerical simulation and analysis of aerodynamic flow. In addition, greater use of newly developed computational tools holds promise for reducing the number of prototype tests, for cutting manufacturing costs, and for reducing overall time to market.
Experimental verification and validation of new computational fluid dynamics methods are also an important part of this approach. Experiments on a model of an integrated tractor-trailer are underway at NASA Ames Research Center and the University of Southern California. Companion computer simulations are being performed by Sandia National Laboratories, Lawrence Livermore National Laboratory, and California Institute of Technology using state-of- the-art techniques, with the intention of implementing more complex methods in the future.
Rose McCallen, Richard Couch, Juliana Hsu, Fred Browand, Mustapha Hammache, Anthony Leonard, Mark Brady, Kambiz Salari, Walter Rutledge, James Ross, Bruce Storms, J.T. Heineck, David Driver, James Bell, Gregory Zilliac
Lawrence Livermore National Laboratory, University of Southern California, California Institute of Technology, Sandia National Laboratories, NASA Ames Research Center, On contract to NASA Ames from Aerospace Computing, Inc.