Fluid mechanics 1 Assignment 2
Question 1
I.
A velocity field is given by:
m/s
Velocity fields are plotted
below, where the arrows indicate the magnitude and direction of the velocity
vectors.
The picture that best describes the field is:
A
B
C
D
II.
Consider the path that a football thrown by Brett Favre.
Suppose that you are
interested in the knowing how far the ball goes.
Then you are interested in
the:
A. LaGrangian or particle view of the football
B. Eulerian view of the field
C. Neither LaGrangian nor Eulerian
III.
The Reynold’s Transport Theorem is written as:
In words,
this equation reads:
A
d
V
d
t
dt
dN
System
CV
CS
V
A. The rate of change of the amount of mass in the control volume is balanced
by the net rate at which mass is flowing through the control surface
B. The rate of change of any arbitrary extensive property of the system is equal
to the time rate of change of the arbitrary extensive property N within the
control volume plus the net rate of flux of N through the control surface
C. The rate of change of N is balanced by the velocity flux and the rate of change
of the control volume.
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 Three '11
 MrTeacher
 Fluid Dynamics, Fluid Mechanics, velocity VA

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