Scaling Effects for Hydrofoil Testing: Developing a methodology for hydrofoil performance measurements in towing tank
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Mobility engineering (MPMOB), MSc
Publicerad
2024
Författare
Eriksson, Wilhelm
Varvne, Marcus
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The fast development and growing interest in hydrofoils within marine applications have
led to an increased demand for testing and verification of foil designs. Testing model scale
hydrofoils is not as straightforward as for traditional displacement hull models. Currently,
there does not exist a proposed way of scaling down a hydrofoil. This work sheds light
on the issues of different scaling effects and proposes a method to perform model scale
testing of a hydrofoil.
This report is an outcome of a master’s thesis project within Naval Architecture and
Aerospace Engineering at Chalmers University of Technology. The project aims to evaluate
different scaling effects on a horizontal hydrofoil and develop a feasible methodology to
test foil performance in a towing tank. Limiting factors of the towing tank are identified
and flow effects relative to submergence depth and testing velocity are investigated in the
Computational Fluid Dynamics software STAR CCM+. The results build on a verified
solver setup by conducting a turbulence model study. The effects of varying submergence
depth and velocity is investigated using a generic profile Eppler 818. The characteristics
of a wave is shown to have a significant effect on lift.
Beskrivning
Ämne/nyckelord
Hydrofoil , scaling , experimental testing , towing tank , free-surface , CFD