1995: A New Division of Drag

• Unsteady drag depends on the penetration of the vorticity away from the wall. (Van Dommelen & Shankar, submitted).
• Subdivide into convective and diffusive drag, instead of pressure and viscous drag. (Van Dommelen & Shankar, submitted).
• Example: for a cylinder at very small times
  • pressure drag = viscous drag
  • convective drag = 0, diffusive drag is all
  (Van Dommelen & Shankar, submitted):
• The Van Dommelen & Shen process does not affect the drag. Hello, D'Alembert (Van Dommelen & Shankar, submitted).

05/16/00 0:55:01