ChBE421 Problem Set #3 Fall 2015
Assigned: 09/15/2015
Due: 09/22/2015
1. What assumption must be made to simplify the Integral Energy Balance into
Bernoulli’s Equation?
2. Sea water (S.G. 1.025) ﬂows
ChBE421
Assigned: 9/6/2011
Due: 9/13/2011
Problem Set #2v2
Fall 2011
1. Water flows from the bottom of a large tank where the pressure is 95 psia to a turbine,
located 65 ft below the bottom of the ta
ChBE421
Test #1
Fall 2009
1. (25 pts) Answer briefly (5 pts) Consider a ball (dimension L) thrown at a defined velocity (U). If the density of the liquid through which the ball is thrown is doubled wh
y.
f,
w 4" ,
\ ,4
a
A A L A
. , ) 1 / ~.
g \Yiah, kxjflk
A x1 v
L W41 7, \
Mmk. :, 3" a
A A
ax: AX
(1 c}
;/A '3 X,
4 § "3,1
_\ c.
(9
,pw , 9,; * L 4
k 4 {Dy \1 \
\ _ "
-)\
A if: m 7,. , ,.
ChBE 421
Problem Set #4
Spring 2016
1 A fluid suspension is placed in a rheometer and the data below is found for shear stress as a function
of shear rate du/dr. Plot this data (log-log) and find the
ChBE421
Assigned: 9/27/2011
Due: 10/6/2011
Problem Set #4
Fall 2011
1. Two immiscible fluids of different density and viscosity are flowing between two parallel
plates. Express the boundary conditions
ChBE421
Problem Set # 9
Fall 2009
1. A shell and tube heat exchanger having two shell passes and eight tube passes is used to heat kerosene from 20 C to 75 C. The kerosene (CP = .49 kcal/kg C) enters
ChBE421
Problem Set #2 Solutions
Fall 2009
1.
& W 1 P (v 2 ) + gz + + lw + s = 0 & 2 m
where: z = 0, P = 0, lw = 0
& m & W s = (v 2 ) 2 = -0.5 x (1.2 kg/m3) x (14 m/s) x (/4(25 m)2) x [(5 m/s)2 (14 m/
ChBE421
Assigned: 10/09/2012
Due: 10/16/2012
Problem Set #5
Fall 2012
1. Answer briefly:
a. Consider the boundary layer on a flat plate in uniform flow. Shear stress: = u/y.
If we triple the viscosity
ChBE421
Problem Set #4
Fall 2009
1. Consider the problem of laminar, unidirectional flow in a pipe of radius a that we worked through in class (remember to include viscosity!). Solve for the velocity
Problem Set #7 Solutions
1. In designing a spray coating system, it is known that the behavior of a droplet as it
strikes the surface is a function of liquid density, viscosity, surface tension, dropl
CHBE421 Exam 3
<Please answer all questions in the spaces provided>
December 2, 20] l
50 UK)
Name:
Section:
CLOSED-BOOK; CLOSED-NOTES; CALCULATORS ALLOWED
CELL PHONES MUST BE KEPT IN BAGIPOCKET AT ALL
ChBE421
Problem Set #2
Fall 2009
1. In this era of high energy prices, there is a focus on renewable sources of energy such as wind energy. Consider a large windmill 30m in diameter. On a windy day, s
ChBE421
Due: 10/11/2011
Problem Set #5
Fall 2011
1. For flow at very low speeds and with large viscosity, (the so-called creeping flows) such as
occur in lubrication, it is possible to delete the iner
ChBE 421
Problem Set #6 Solution
Fall 2009
1. The variables involved are: , , , D, v, e Using the Buckingham theorem, we will get 3 different dimensionless groups. Since the problem gives relations fo
ChBE 421
Problem Set #2
Fall 2008
1
A rigid fixed plate is struck by a jet of water and deflects the jet by an angle of 30 as shown on next
page. The liquid surface of the jet is at atmospheric pressu
ChBE421
Problem Set #3
Fall 2009
1. A hovercraft is a vehicle which floats on a cushion of air. In a simplified design as illustrated below, the craft has an air intake 7 ft in diameter through which
ChBE 421
1
Test #2
Fall 2008
(30 pts) Answer briefly.
(a)
Sketch the velocity profile for a shear thickening fluid flowing down a wall under the action
of gravity.
Profile shows a nearly linear profil
L7b-1
Announcements
HW2 is due at the start of class, Monday June 26th
HW3 is due on Monday July 3rd
No class on Tuesday July 4th
Review your amino acids- you will need to know them to
answer iclicker
L7-1
Announcements
We started using i-clickers in class for credit last week
The iclicker questions from each lecture are included in
the version of lecture slides that is posted on Compass
after cla
L9-1
Announcements
Exam 1 is Thursday June 29th during our regular class time
Will cover L1 L6 (intro through enzyme kinetics, including graphing)
Corresponds to the material on HWs 1 & 2
Will NOT
L8-1
Announcements
HW2 is due now (the start of class, Monday June 26th)
Exam 1 is Thursday June 29th during our regular class time
Will cover L1 L6 (intro through enzyme kinetics, including graphing