CHE3 54 Fluid Flow Operations Homework #11
Fall 2015 Due 11/10/15
1. Geankoplis 3.2-1 Note: density of CC14 is 1595 kg/m3 at 20°C.
2. Geankoplis 3.2-5 Note: density of Hg is 13,600 kg/m3 at 20°C
3. Geankoplis 3.2-7
4. Geankoplis 3.3-1
5. Geankoplis 3.3-3
CHE304: Lecture 10
September 25, 2014
Review from last lecture:
§2.7 Overall Energy Balance
Three types of energy:
1. 90404 {J = Energy due to position of mass in a gravitational eld
2. K CAI/itd = Energy due to motion of mass
3. may {,4 of = All other en
CHE304 Lecture 6
Margaret Liu
September 13, 2016
2.6C Overall Mass-Balance Equation (continued)
Generalized Overall Mass-Balance Equation
Example problem (Example 2.6-2):
-1-
CHE 304 Lecture 6
ML
Ans:
Total mass balance for the net total mass efflux
Rate
CHE304 Lecture 4
Margaret Liu
September 06, 2016
2.4A Newtons Law and Viscosity (Review)
Group Exercise: Shear Stress = Force per unit area
Q1. Label the shear stresses in the following systems, according to
the coordinate system indicated on the left.
Q2
CHE304: Lecture 1
Margaret Liu
August 18, 2016
1.1B Fundamental Transport Processes
1. Momentum transfer = fluid flow
2. Heat transfer = convection, conduction, radiation
3. Mass transfer = diffusion, separation
1.2A-C Units
SI
CGS
= Systme International
CHE304 Lecture 5
Margaret Liu
September 8, 2016
2.5B Laminar and Turbulent Flow (Review)
Two types of fluid flow in a pipe or between two flat plates:
Laminar
Turbulent
Re < 2100
Re > 4000
Reynolds Number = Rex =
x
where = average velocity of the fluid (i
CHE304-002 Lecture 3
Margaret Liu
August 25, 2016
2.3A General Molecular Transport Equation and General Property Balance
rate of transfer process =
z =
where
z (psi) =
driving force
resistance
d
dz
flux per unit time per unit cross-sectional area
cfw_
pr
CHE304 Lecture 2
Margaret Liu
August 23, 2016
2.2B Pressure in a Fluid
Q: The absolute pressure at the bottom of the tank is 240 kPa.
What is the density of the unknown Fluid A?
Ans:
Water
A
2m
4m
Group Exercise:
What is the pressure in our atmosphere at
CHE304-051
Homework 2 SOLUTIONS
60 points | DUE 6/2/16
Summer 2016
1. [5 pts] For purposes of most engineering calculations, air is assumed to be composed of 21
mol % oxygen and 79 mol % nitrogen. Calculate the average molecular weight.
2. [10 pts] The ga
CHE304-051
Homework 12 SOLUTIONS
100 points | DUE 6/24/16
Summer 2016
1. [30 pts] Particles having a size of 0.10 mm, a shape factor of 0.86, and a density of 1200
kg/m3 are to be fluidized using air at 25C and 202.65 kPa abs pressure. The void fraction a
CHE304-051
Homework 5 SOLUTIONS
100 points | DUE 6/8/16
Summer 2016
1. [25 pts] A hydrocarbon liquid enters a simple flow system shown at an average velocity of
1.282 m/s, where A1 = 4.33 103 m2 and 1 = 902 kg/m3. The liquid is heated in the process
and t
CHE304-051
Homework 8 SOLUTIONS
75 points | DUE 6/14/16
Summer 2016
1. [15 pts] Pure water at 20C (density = 998.2 kg/m3) is flowing down a vertical wetted-wall
column at a rate of 0.124 kg/s m. Calculate the film thickness and the average velocity.
CHE30
CHE304: Lecture 11
September 30, 2014
Review from last lecture:
§2.7F: Overall Mechanical-Energy Balance Eguation
For steady-state ow, the batch work done by the uid =
§2.7G: The Bernoulli Eguation for Mechanical-Energy Balance
Bernoulli eguation: For t
CHE3 54 Fluid F low Operations Homework #10
Fall 2015 Due 10/27/15
0) Geankoplis 3.1-2
2. Geankoplis 3.1-5
3. Geankoplis 3.1-10
Geankoplis 3.1-12
5. Air at 1 atm abs and 90°F is ﬂowing past a 2-cm diameter sphere in a wind tunnel. Calculate
the drag coef
CHE354 Fluid Flow Operations Homework #7
Fall 2015 Due 10/01/15
1. Geankoplis 2.8-3 Find the force on the wall in both the x- and y-directions
2. Geankoplis 2.8-5 (Hint: See Fig. 2.8-5b and discussion on pages 81-83 of your book.)
3. Geankoplis 2.8—6
4. G
CHE354 Fluid Flow Operations Homework #6
Fall 2015 Due 9/24/15
1. Geankoplis 2.7-1
2. Geankoplis 2.7-3
3. Geankoplis 2.7-6
4. Geankoplis 2.7-7
5. Geankoplis 2.7-9
6. Water exits a 5-nozzle sprayer to the atmosphere as shown below. Calculate the volumetric
CHE354 Fluid Flow Operations Homework #5
Fall 2015 Due 9/17/15
1. 2,000 L/min of water ﬂows through a circular section with an inside diameter of 300 mm that
later reduces to a 150-mm diameter section. Calculate the average velocity (in m/s) of ﬂow
in eac
CHE354
Fall 2015
l.
Homework #3
Due 9/ 3/ l 5
Fluid Flow Operations
Geankoplis 2.2-3
Geankoplis 2.4-1
. Geankoplis 2.4-2
For the differential manometer shown below, calculate the pressure difference between
points A and B (PA— P13) in psi. The speciﬁc g
CHE304: Lecture 8
September 16, 2014
Review from last lecture:
§2.6D Avera e Veloci to Use in Overall Mass Balance
So far we have assumed constant velocities at the inlet and outlet. In reality, the velocity is not constant
but varies across the surface
CHE304-051
Homework 11 SOLUTIONS
90 points | DUE 6/22/16
Summer 2016
1. [10 pts] Air at 101.3 kPa absolute and 25C is flowing at a velocity of 10 m/s in a wind tunnel.
The density and viscosity of air at this temperature and pressure are 1.187 kg/m3 and 1
CHE304-051
Homework 6 SOLUTIONS
100 points | DUE 6/9/16
Summer 2016
1. [25 pts] Water at 93.3C is being pumped from a large storage tank at 1 atm abs at a rate of
0.189 m3/min by a pump. The motor that drives the pump supplies energy to the pump at the
ra
CHE304-051
Homework 9 SOLUTIONS
80 points | DUE 6/15/16
Summer 2016
1. [20 pts] Calculate the frictional pressure drop in pascal for olive oil with density = 919 kg/m3
and viscosity = 84 cp flowing through a commercial pipe having an inside diameter of 0.
CHE304-051
Homework 10 SOLUTIONS
100 points | DUE 6/21/16
Summer 2016
1. [25 pts] A pitot tube is used to measure the flow rate of water at 20C in the center of a pipe
having an inside diameter of 102.3 mm. The manometer reading is 78 mm of carbon
tetrach
CHE304-051
Homework 3 SOLUTIONS
40 points | DUE 6/3/16
1. [10 pts] An open U-tube manometer is being used to measure the
absolute pressure pa in a vessel containing air. The pressure Pb is
atmospheric pressure, which is 754 mm Hg. The liquid in the
manome