APPLIED FLUID MECHANICS D203 Q8 2004
(a) The figure shows a network of pipes transporting water at a flow rate Q from the inlet node to
the outlet node. The individual pipes in the network are numbered as shown and the friction head
loss in the pipes is g
D203 APPLIED FLUID MECHANICS 2004 QUESTION 7
7 (a)
Show that to avoid a shock loss at entry to the runner of an inward radial flow
reaction turbine when the blade thickness at inlet to the runner is negligible, the inlet
guide vane angle 1 should have the
APPLIED FLUID MECHANICS D203 QUESTION 6 2004-08-18
(a) For isentropic flow in a variable area duct, derive the expression
dA du 2
=
M 1
A
u
(
)
where u is the fluid velocity, M the Mach number and A the cross-sectional area of the duct.
Use the expression
APPLIED MECHANICS OF FLUID D203 QUESTION 9 2004
(a) (i) Explain the importance of the Net Positive Suction Head (NPSH) for a pump
installation.
(ii) Use the energy equation to derive an expression for NPSH for the case where the pump
inlet is situated at
APPLIED FLUID MECHANICS D203 QUESTION 5 2004
(a) Explain how momentum is transferred in the turbulent flow of a fluid and compare this with
momentum transfer in laminar flow.
2 du
2
(b) (i) The mean shear stress in a turbulent flow in a pipe is given by
APPLIED MECHANICS OF FLUIDS D203 Q4 2004
a)
Show that the combination of a uniform flow with velocity U in the x-direction, a
doublet of strength Q at the origin of an x - y coordinate system and an irrotational
vortex with circulation also at the origin
Q4 2008
a A circular pipe has a vertical axis. Oil spills over the open top of the pipe at a steady rate and flows down the outside of the
pipe under gravity, forming a symmetrical and continuous film. A short distance down the outside of the pipe from th
APPLIED FLUID MECHANICS D203 SOLUTIONS 2004 QUESTION 3
A 150 mm diameter pipe is fitted with a double nozzle with the geometry shown. At section (2)
the exit diameter of the nozzle is 80 mm and at section (3) the exit diameter is 100 mm. The
pipe and both