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Department of Energy and
Process Engineering
Spring 2017
Investigations of a
Harmonic Oscillatory
Flow
Supervisor:
Pål-Tore Selbo Storli
Isak Bergset
MASTER THESIS
Background and objective
The purpose of this master thesis is to establish
a test rig for investigation of transient harmonic
flow. Water hammer will be created by rapid
valve closure. Additionally, a water column
separation in a siphon shaft system will be
examined.
Frictional losses in transient flow is not very well
described, given the complexity of a fluctuating
system. It is thus of great interest for power
companies to gain more knowledge about this
subject, in order to include this knowledge in
their operational strategy.
This thesis covers a close study on transient
oscillatory losses, where experimental tests are
compared with simulation methods.
This picture
illustrates the
water hammer
phenomena
This picture shows the oscillatory
pressure wave generated by a water
hammer
This picture shows a sketch of the final dynamic
test rig, including components and instruments