CED for External Aerodynamics

The extensive capabilities of Computational Fluid Dynamics (CFD) for numerical simulation of complex flow phenomena have been described in numerous surveys. They show considerable progress in the fields of physical modelling and numerical methods as well as in the availability of computer power. The author explains the concrete approaches and the tools by which the required flexibility and speed are achieved. The simulation program Powerflow uses Cartesian grids generated independently by the program. Introducing areas of refined meshing is necessary in order to account for geometric details. Local flow conditions have to be accounted for in volume meshing, including fine meshing within regions of abrupt changes in flow velocity and coarser meshing at a distance from the vehicle. The author then looks at minimal requirements on surface meshing and describes how morphing programs work, allowing the development of modified versions of the geometry for further calculations.

  • Authors:
    • ING
    • GORN, U
  • Publication Date: 2007-8

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01109248
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Aug 25 2008 7:57AM