1 For a stationary, smooth circular cylinder (with D = 10 cm and L = 100 cm) in a uniform flow (with U. = 31 m/s), (a) Determine the drag force and
View the step-by-step solution to:

Question

solution thank you very much

1 For a stationary, smooth circular cylinder (with D = 10 cm and L = 100 cm) in a uniform flow
(with U. = 31 m/s),
(a) Determine the drag force and CD for (mean) wake velocity profiles:
u(y) = U. sin-
2a
and u(y) = -
U.y
a
_, respectively. a = 2.2D.
(b) Compare the CD determined with the published data. Discuss the difference, it there is any.
Vair = 0.155 cm /s. Pair = 1.225 kg/m'.
2. Why is there a CL' for a circular cylinder? Discuss its importance.
3. For very low spin ratios (= (D/2U. &lt; 0.5), why is CL &lt; 0 (i.e., a negative Magnus lift) for a
circular cylinder?

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

• -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents