Tutorial 3
1. A Sphere of density 2500 kg/m3 falls freely under gravity in a fluid of density 700 kg/m3
and viscosity 0.5 x 10-3 Pa.s. Given that the terminal velocity of the sphere is 0.15 m/s ,
calculate its diameter. What would be the edge length of a
Tutorial
1. A leaf filter has an area of 0.1 m and operates at a constant pressure drop of 400 kPa.
The following results were obtained during a test on filtration of a slurry:
2
Volume of filtrate
collected (litres)
Time (second)
19
31
41
49
56
63
30
0
6
TUTORIAL 2 (Week 3)
1. Air and water flow at 8 x 10
-3
kg/s and 0.4 kg/s in a horizontal, smooth-wall tube of
internal diameter D = 20 mm and length L=1.3 m. Using the homogeneous flow
model and Lockhart-Martinelli model, calculate the pressure drop acros
ChE 324 Fluid Particle Processes
Week 5 Tutorial
1. A gas absorption tower of diameter 2 m contains ceramic Raschig rings randomly
packed to a height of 5 m. Air containing a small proportion of sulphur dioxide
passes upwards through the absorption tower
Che 324 Fluid and Particle Processes. (Tutorial questions)
1. A slurry containing 5 kg of water/kg of solids (S.G=2.0) is to be thickened to a
sludge containing 1.5 kg of water/kg of solids in a continuous operation. Laboratory
tests using five different
Che 324 Fluid and Particle Processes. (Tutorial questions)
Questions and answers:
1. If the friction factor and pressure gradient in a horizontal pipeline remain constant, a
doubling of the diameter will cause a 16-fold increase in the flow rate.
T/F
2. F
1
CLASS PROBLEM-11 , Advanced Heat and Mass Transfer 422 &ChE542
On
Evaporation
Acontinuoussingleeffectevaporatorconcentrates9072kg/hrofa1.0wt%
saltsolutionenteringat311.0K(37.80C)toafinalconcentrationof1.5wt
%.Thevaporspaceoftheevaporatorisat101.325kPa(1