F ABE 2110
AGITATION AND MIXING OF FLUIDS AND POWER REQUIREMENTS
A. Purposes of Agitation .{ MM \ “(j
1. Dissolving solids in liquids, such as salt in water.
2. Dispersing a gas in a liquid as ﬁne bubbles, such as oxygen from air in a suspension of
microo

Pump Performance Evaluations
In pump design, the energy of fluid is expressed in terms of head.
Head: Pressure expressed as height of liquid.
Suction side
Discharge side
+
+ + =
+
+
Total suction head:
= + +
Total discharge head:
= + +
PUMP H

1/29/2016
FABE 2110
Recitation Problems
Instructor: Dr. Fife
Spring 2016
1. Figure P3.12 shows ajet pump that consists of a tube within a tube. Air is forced
into the smaller tube at a pressure of 700 kPa, a temperature of 300 K and a velocity
of

/.—.‘_
1/22/2015
FABE 2110 Instructor: Dr. Fife
I Recitation Problems Spring 2016
1. Flow through a pipe under certain conditions has a velocity distribution given by
m: 22‘ _ ._ _g _
vx ‘—“x.\4' # L [if :i r: o * Mg H .
XVI i/
_/' / ”

'x
a
Recitation Problems
2/26/2016
FABE 2110
Instructor: Dr. Fife
Spring 2016 ;
1. The ﬁgure below shows the fuel line in a car between the fuel tank (1) and fuel pump entrance
(2). The fuel line in the car is made of drawn copper tubing, 3/8—standard, ty

3/4/2016
' F ABE 2110 Instructor: Dr. Fife
Recitation Problems Spring 2016 f
l. A centrifugal pump is being considered for transporting water from tank A to tank B. The
diameter of the galvanized iron pipe is 4 cm. The minor losses include a contraction

3/11/2016
FABE 2110 Instructor: Dr. Fife
Spring 2016
1. Textbook 7.14 Consider a triangular channel of m I 0.4.
a. Plot a family of speciﬁcwenergy lines for Q = 0, 4, 8, 12, and 16 ft3/s.
b. Draw the locus of critical depth points.
c. Plot Q

FABE 21 10
Chapter 8
COMPRESSIBLE FLOW
Compressible ﬂow of gases
0 lncompressible — small changes in density do not affect velocity and
pressure (p Z constant)
0 Compressible — if density [or pressure) changes < 10%,
0t
pd — p5
P3
x 100 < 10%
w —

FABE 2110
Chapter 7
OPEN CHANNEL FLOW
Open Channel Flow
I Fluid flow with a free surface open to the atmosphere
I Fluid ﬂow not completely enclosed by solid boundaries
- Forces important to open channel flow are inertia, viscosiﬂ, and gravity
I
Examples