Prospects for Numerical Simulation of Bluff-Body Aerodynamics

  • C. W. Hirt
  • J. D. Ramshaw


An improved understanding of the aerodynamics of bluff bodies such as road vehicles can lead to significant reductions in gasoline consumption and to increased safety and comfort. To achieve these goals improved theoretical and experimental techniques are urgently needed. This paper explores the potential of using numerical-simulation methods for predicting and interpreting aerodynamic phenomena affecting bluff bodies. As a basis for discussion, a prototype finite-difference method is described, and illustrated with sample calculations of air flow about simple bluff bodies. The limitations of this scheme are then discussed in detail, together with some suggestions for extensions that could be realized in the immediate future. The paper concludes with speculations on what could be achieved in the next five to ten years to produce a generally useful research tool for bluff-body aerodynamics.


Reynolds Number Wall Shear Stress Eddy Viscosity Truncation Error Bluff Body 
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Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • C. W. Hirt
    • 1
  • J. D. Ramshaw
    • 1
  1. 1.University of California Los Alamos Scientific LaboratoryLos AlamosUSA

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