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Department of Energy and
Process Engineering
Spring 2017
FSI Investigation of a
Hydrofoil
Supervisor:
Pål-Tore Selbo Storli
Karoline E Heggebø
Background
Vortexes may occur when a fluid flows over a
solid body. In hydro power plants these vortexes
can form when water passes the stay vanes and
guide vanes, and will flow into the runner. This
can cause high frequency noise and potentially
damage the turbine. It is therefore of interest
to mitigate vortex shedding and a modified
hydrofoil design to achieve this is proposed.
The objective of this master thesis is to perform
fluid-structure simulations on the original
and the modified hydrofoil to investigate if
the modifications have resulted in reduced
vortex shedding. The results will be verified by
laboratory measurements using PIV.
MASTER THESIS
This picture shows the vortex shedding
behind the unmodified hydrofoil
This picture shows the vortex
shedding behind the modified hydrofoil