Basic HTML version of Foils prepared 10 November 1995

Foil 37 Importance of Boundary Layer in Computation of Drag

From Fox Presentation Fall 1995 CPS615 Basic Simulation Track for Computational Science -- Fall Semester 95. by Geoffrey C. Fox
Calculation of Drag - needed by aircraft manufacturers such as Boeing to maximize speed and fuel efficiency of aircraft. Requires understanding of boundary layer as this governs force on aircraft !
Either "direct simulation of turbulence" (i.e. full Navier-Stokes equations) or accurate approximate (i.e. model turbulence) methods are needed.
At present
  • They cannot accurrately calculate absolute size of drag
  • They can compare different designs to see which has smaller drag

© on Tue Oct 7 1997