ENGI 5961
Assignment 5
Due Date: June 27, 2014 by 1 PM
Q.1. Show that the frictional torque T required to rotate a disc of diameter d at an angular
velocity in a fluid of density is given by
and identify the Reynolds number group.
Solution:
Q.2. Develop a
ENGI 5961
Assignment 4
Due Date: June 19, 2014 by 1 PM
Q 1. Oil flows through a pipeline 0.4 m in diameter. The flow is laminar and the velocity
at any radius r is given by u = (0.6 15r2) m s1. Calculate (a) the volume rate of flow,
(b) the mean velocity,
ENGI 5961
Assignment 3
Due Date: June 12, 2014 by 1 PM
Q 1. Water flows through a pipe AB 1.2 m in diameter at 3 m.s1 and then passes through
a pipe BC which is 1.5 m in diameter. At C the pipe forks. Branch CD is 0.8 m in
diameter and carries one-third o
ENGI 5961
Assignment 1
Due Date: May 29, 2014 by 1 PM
Q 1. At what depth below the free surface of oil having a density of 600 kg m3 will the
pressure be equal to 1 bar?
Q 2. What would be the pressure in kilonewtons per square metre if the equivalent hea
ENGI 5961
Assignment 2 Solution
Due Date: June 5, 2014 by 1 PM
Q 1. A rectangular pontoon 10 m by 4 m in plan weighs 280kN. A steel tube weighing 34
kN is placed longitudinally on the deck. When the tube is in a central position, the centre
of gravity for
6.8 An incompressible viscous uid is placed
between two large parallel plates as shown in Fig.
P6.8. The bottom plate is xed and the upper
plate moves with a constant velocity, U. For these
conditions the velocity distribution between the
plates is linear