CBE 30355 - Lecture Notes - Nov. 25, 2008

Announcements

The homework assigned today will be due a week from Thursday.

Class notes

The main points of the lecture were

• Complex Boundary Layer Flows

Goals:

• Show how boundary layers grow in favorable or adverse pressure gradients.

Reading

• The class notes.
• BS&L, chapter 4

Additional Readings:

For homework this week you are asked to solve for the velocity profile in boundary layer flow along a flat plate with suction - one of the techniques used to control boundary layer growth and separation. For a good short discussion of the various approaches to boundary layer control, check out the link given here. A really lovely picture of the effect of suction on boundary layer separation over a wing may be found here. Another link at the same site (given here) has some interesting examples of experimental planes where the technique was used.

Demonstration: