Lecture 13
Fittings:
Valves:
Adjusted length = actual pipe length + equivalent length
for fittings
Resistance coefficient (K) is related through F = K V2/2
Equivalent length= L/D
Ball valve
http:/www.
Lecture 25 CBE 218 Fluid Mechanics
April 5, 2015
Centrifugal pump
Centrifugal pump
Pump head = h (height to which the pump will lift a fluid at a given flow rate.
h =P4P1/g = 2(r32r22)/g + (V12V22)
Lecture 16
EXAMPLE PROBLEMAir at 1 atm and 68oF flowing in a long rectangular duct whose cross section
is 1 ft x 0.5 ft with a velocity of 40 ft/s. The roughness of the duct is 0.00006 in. What is
the
Lecture 26 CBE 218 Fluid Mechanics
April 15, 2015
Chapter 11
Flow through porous media
11.1 Fluid friction in porous media
11.2 Twofluid concurrent flow in porous media
11.3 Countercurrent flow in po
Lecture 3
Basic Equation of Fluid Statics Non Vertical Direction
z= z
dP/dz= g (barometric equation)
dP/da (?)
Top
dP/dz= (dP/da).(da/dz)= g
z
cos () = z/a
= dz/da
a
(x=0, y=0, z=0)
z=0
x
y
dP/da=

WELCOME TO CBE 218
CHEMICAL ENGINEERING II FLUID MECHANICS
Course Description: The second course on the theory and practice of chemical
engineering with emphasis on momentum transfer
Credits: 3.0
Text
Lecture 17 CBE 218 Fluid Mechanics
Feb 25, 2015
Chapters 7 and 15
MOMENTUM, VECTORS AND SCALAR COMPONENTS
Momentum of a body = (Mass of a body). (velocity of a body) = mV
Momentum is vector.
F = ma
bo
Lecture 22 CBE 218 Fluid Mechanics
March 18, 2015
COMSOL
Consider two immiscible and viscous liquids flowing at 300 k in zdirection
In a thin horizontal slit of width 0.5 m and height of 0.1 m under
Lecture 12
THE EQUATIONS TO BE SOLVED IN ALL PIPEFLOW WITH FRICTION PROBLEMS
CLASSROOM EXAMPLE PROBLEMOil at the rate of 50 gal/min is flowing steadily from tank A to tank B through 2000 ft of
3in s
Lecture 21 CBE 218 Fluid Mechanics
March 16, 2015
Grids
To apply difference equations to multidimensional problems, we divide the space into
many points located on a mathematical grid.
x
i1, j+1
y
i+
Lecture 19 CBE 218 Fluid Mechanics
March 4, 2015
MOMENTUM BALANCE EQUATION MULTIDIMENSIONAL
Rate of momentum accumulation = Rate of momentum in
 Rate of momentum out + summation of all forces
1Vx1 V
CBE 218 Chemical Engineering II
Text book: Fluid Mechanics for Chemical Engineers, Noel de Nevers
Summary (Chapters 16)
Chapter 1 Introduction
Fluid basics
Fluid Mechanics is study of forces and moti
Lecture 14
Fittings:
Valves:
Adjusted length = actual pipe length + equivalent length
for fittings
Resistance coefficient (K) is related through F = K V2/2
Equivalent length= L/D
Ball valve
http:/www.
Lecture 10
INCLINED VENTURI METER WITH A MANOMETER
Apply B.E. between points (1) and (2).
(P/+ gz + V2/2) = dWn,f/dm F
dWn,f/dm = 0, F = 0
From mass balance equation with constant
density V1A1 = V2A2
Lecture 5
CHAPTER 4
ENERGY BALANCES
Energy flow in energy flow out + energy created energy destroyed = accumulation
Energy cannot be created nor destroyed, only transformed 1st law of thermodynamic
En
Lecture 7
HEAD FORM OF BERNOULLIS EQUATION
(P/+ gz + V2/2) = dWn,f/dm F
Divide throughout by g
(P/g+ z + V2/2g) = dWn,f/gdm F /g
Head form of B.E.
Every term in the above equation has unit of length.
Lecture 2
Basic Equation of Fluid Statics
z= z
dP/dz= g (barometric equation)
dP/da (?)
Top
dP/dz= (dP/da).(da/dz)= g
z
cos () = z/a
= dz/da
a
(x=0, y=0, z=0)
z=0
x
y
y
+
x
 g .(dz/da)
= g cos()
B
CBE 217
Lecture #21 April 16, 2015
Chapter 7  Energy
1
Energy is $expensive$
How will you use energy balances?
Determine the amount of energy required to
vaporize water in a steam boiler, the amoun
CBE 217
Lecture #19 April 10, 2015
Turn in Exam 2 extra credit now please!
1
Class Projects
Form groups of 3 or 4 people and turn in a paper with your group
members on 4/14/15 same groups for Design a
CBE 217
Lecture #22 April 21, 2015
Energy balances 7.47.6
1
Flow Work/Shaft Work
Shaft work: done by the process fluid on a
moving part within the system
Flow work: work done by the fluid at the
sy
CBE 217
SDSM&T
Spring 2015
CBE 217: Chemical Engineering Material Balances
Instructor(s)
Dr. Jennifer Leberknight
Office CBC3312
[email protected]
Classroom
CBC 113
Lecture Time Tuesday
Nicholas S. Johnson
4/9/15
Exam 2 extra credit
CBE217 Materials and Balances
Keystone Pipeline Debate
What is the Keystone Pipeline?
The Keystone Pipeline System is an oil pipeline system, owned by T