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Homework Set #5:
Due date: 10/19/10, by 12:00 pm.
Problem #1:
Solve Problem 3A.1 in Chapter 3 of BSL.
Problem #2
:
The annular space between two coaxial long circular pipes is filled with a viscous, Newtonian
fluid. The radii of the inner and outer wetted surfaces are
κR and R, respectively. The inner
pipe
is rotating with an angular velocity of Ω.
Determine the velocity profile of the fluid and the
torque required to keep the inner pipe rotating, using the equations of motion and continuity. For
simplicity it is assumed that there is no flow in the axial direction of the pipes.
Problem #3:
a)
Derive a dimensionless partial differential equation of motion describing unsteadystate
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 Spring '11
 Q.P.NGUYEN

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