Problem 6.48
[Difficulty: 2]
Given:
Flow in pipe/nozzle device
Find:
Gage pressure needed for flow rate; repeat for inverted
Solution:
Basic equations
Q
2
p
VA
V
gz
2
const
Assumptions: 1) Incompressible flow 2) Inviscid 3) Steady 4) Along a streamline
Av
Problem 7.9 [2]
ber): {4+ low jgcdéj drag 13 robacnadé cur f/c-u'd cnd}fcj,
F ' F'Lu, V, .D J
Flhd. Ammpr/qe dthcnsfon/dss mmccns,
Salami/En 1' Apply BuchJ/wgham TPMCéu'Mre,
(D F /u V D n: a, Maa:
® kiwi pmbvary dhxxaébné M,Lt.
® F /u v D
.19 5:. L f'
Problem 4.22 [1]
4.22 Consider steady. incompressible flow through the device 5'
shown. Determine the magnitude and direction of the volume flow L r \ A3 : 002 m2
rate through p011 3.
l
A1 = 0.1 m2
Given: Data on ow through device
Find: Volume ow rate
Problem 9.97
Given:
Windmills are to be made from surplus 55 gallon oil drums
D
Find:
[Difficulty: 2]
24 in
H
29 in
Which configuration would be better, why, and by how much
Solution:
Basic
equations:
FD
CD
1
2
2
V A
(Drag)
Assumptions: (1) Standard air
(
Problem 12.83
[Difficulty: 2]
Given:
Air flow through turbine
Find:
Stagnation conditions at inlet and exit; change in specific entropy; Plot on Ts
diagram
Solution:
k
p0
Basic equations:
Given or available data
p
k
1
1
2
M
2
k 1
T0
T
1
k
2
M1
0.4
p1
625
Problem 8.98
[Difficulty: 3]
Problem 8.124
Given:
Flow from pump to reservoir
Find:
[Difficulty: 2]
Pressure at pump discharge
Solution:
p1
Basic equations
V1
2
2
p2
g z1
V2
2
g z2
2
h lT
h lT
hl
h lm
f
L V1
2
Kexit
2
D
V1
2
2
at 1 and 2 is approximately
Problem 5.2
[Difficulty: 2]
Given:
Velocity fields
Find:
Which are 3D incompressible
Solution:
We will check these flow fields against the continuity equation
Governing
Equation:
u
x
Assumption:
y
v
w
z
0 (Continuity equation)
t
Incompressible flow ( is c
Problem 8.19
[Difficulty: 5]
Problem 8.38
[Difficulty: 5]
Problem 8.53
[Difficulty: 3]
Problem 8.86
Given:
Data on flow through Alaskan pipeline
Find:
[Difficulty: 2]
Head loss
Solution:
p1
Basic equation
oil g
V1
2
p2
z1
2g
oil g
Assumptions: 1) Steady f
Problem 7.52
[Difficulty: 3]
Given:
Find:
Functional relationship between the power to drive a marine propeller and other physical parameters
Solution:
We will use the Buckingham pi-theorem.
(a) The number of
(b) The terms
D
D
terms that characterize this
Problem 3.20
Given:
[Difficulty: 2]
Two-fluid manometer as shown
l
1.595 (From Table A.1, App. A)
10.2 mm SGct
Find:
Pressure difference
Solution:
We will apply the hydrostatics equation.
Governing equations:
dp
dh
Assumptions:
g
(Hydrostatic Pressure - h
Problem 6.48
[Difficulty: 2]
Given:
Flow in pipe/nozzle device
Find:
Gage pressure needed for flow rate; repeat for inverted
Solution:
Basic equations
Q
2
p
VA
V
gz
2
const
Assumptions: 1) Incompressible flow 2) Inviscid 3) Steady 4) Along a streamline
Av
Problem 4.24
Given:
Data on flow through box
Find:
[Difficulty: 1]
Velocity at station 3
Solution:
Basic equation
VA
0
CS
Assumptions: 1) Steady flow 2) Incompressible flow 3) Uniform flow
Then for the box
VA
V1 A1
V2 A2
V3 A3
0
CS
Note that the vectors i
Problem 2.30
[Difficulty: 4]
Given:
Velocity field
Find:
Plot of pathline for t = 0 to 3 s for particle that started at point (1,2) at t = 0; compare to streakline through same
point at the instant t = 3
Solution:
Governing equations:
For pathlines
dx
up
Problem 1.18
[Difficulty: 2]
Given: Basic dimensions F, L, t and T.
Find:
Dimensional representation of quantities below, and typical units in SI and English systems.
Solution:
(a) Power
Power
(b) Pressure
Energy
Pressure
(c) Modulus of elasticity
Time
Fo