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Experimental investigation on the flow and deformation fields of an elastic propeller
Citation Link: https://doi.org/10.15480/882.9328
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
Author(s)
SINTEF Ocean, Trondheim, Norway
SINTEF Ocean, Trondheim, Norway
SINTEF Ocean, Trondheim, Norway
University of Genoa (UNIGE), Genova, Italy
TORE-DOI
Start Page
747
End Page
752
Citation
8th International Symposium on Marine Propulsors (smp 2024)
Contribution to Conference
Publisher
Norwegian University of Science and Technology, Department of Marine Technology
ISBN
978-82-691120-5-4
Peer Reviewed
true
The hydrodynamic and structural behavior of a flexible isotropic model propeller is the subject of the present work. The propulsive performances of the propeller, the flow field in its wake and the deformation of one blade have been measured in the cavitation tunnel at SINTEF Ocean. The flow field was measured by Stereo Particle Image Velocimetry (S-PIV), while the deformations by Digital Image Correlation (DIC). The propeller was built in epoxy resin by means of casting starting from an aluminum propeller, of which one blade was used to make the mold. The aluminium propeller blades in this study have then been used as a reference propeller whose geometry, at least in model scale, could be considered to be altered to a negligible extent by the intrinsic elasticity of the material. The paper describes the experimental setup, the uncertainty in the measurements and presents the main results from the comparison of the epoxy and aluminum propellers. Previously published data on these propellers showed that the effect of flexibility could be observed on the curves of the thrust and torque coefficients both in experiments and in numerical simulations. In this work the deformations of the blades are further quantified and their effect on the propeller wake assessed, thus allowing for a more thorough comparison between simulations and experiments. The geometry of the propeller (P1566) has been previously published along with the production methods for its resin version, open water characteristics obtained in the towing tank and numerical simulations of the hydroelastic behavior of the blades. As the interest in the elastic behavior of propeller in non-cavitating condition is a topic of renewed interest in the scientific community, all data and geometries, including the tunnel geometry, can be obtained upon request, with the aim of providing validation data for numerical simulations.
Subjects
Fluid Structure Interaction
Digital Image Correlation
Particle Image Velocimetry
DDC Class
620: Engineering
Publication version
publishedVersion
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Name
Savio-ExperimentalInvestigationOnTheFlowAndDeformationFieldsOfAnElasti-1142-1-final.pdf
Type
Main Article
Size
6.97 MB
Format
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