Cheg 355 - Lecture Notes - Dec. 4, 2001
Announcements
Class notes
Scanned Notes
The main points of the lecture were
- Integral Boundary Layer Equations
Goals:
After this class you should be able to:
- Show how boundary layers grow in favorable or adverse pressure gradients.
Reading
- The class notes.
- Middleman, section 9.4.
Additional Readings:
In class we discussed the boundary layer separation which occurs as a result of the
adverse pressure gradient on the back side of a sphere or other bluff body. This
separation may be delayed, and the drag reduced via pressure recovery, when the
boundary layer becomes turbulent. For a nice discussion of this transition, and
associated drag reductions, check out the link given
here.
For a nice application of this principle to golf balls, go to
the Scientific American article here.
David.T.Leighton.1@nd.edu