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Numerical assessment of surface roughness on a full scale propeller
Citation Link: https://doi.org/10.15480/882.9338
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
Author(s)
Chalmers University of Technology, Gothenburg, Sweden
Chalmers University of Technology, Gothenburg, Sweden
Kongsberg Hydrodynamic Research Centre, Kongsberg Maritime, Kristinehamn, Sweden
Kongsberg Hydrodynamic Research Centre, Kongsberg Maritime, Kristinehamn, Sweden
Chalmers University of Technology, Gothenburg, Sweden
TORE-DOI
Start Page
571
End Page
579
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
This work addresses the performance of a full scale propeller in an open water setup for varying roughness heights, obtained with a RANS solver and the k−ω SST turbulence model. The application of roughness is done with wall functions and by resolving the boundary-layer. Two cases are considered for the same propeller geometry, one with and another without the anti-singing edge on the propeller blades. Baseline simulations without roughness are performed as well, and grid refinement studies are carried out to estimate the numerical uncertainty. The results showed that the influence of roughness is weak if wall functions are not used, whereas a significant decrease in thrust and torque is obtained if roughness is applied in conjunction with wall functions. The inclusion of the anti-singing edge leads to an increase in thrust and torque, but decrease in efficiency for low advance coefficients. The region of separated flow near the trailing edge of the propeller caused by the antisinging edge is influenced by the roughness height, and is absent in the geometry without the anti-singing edge.
Subjects
Marine Propeller
Turbulence Modelling
Roughness
Anti-singing Edge
Full Scale
DDC Class
620: Engineering
Publication version
publishedVersion
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Name
Lopes-NumericalAssessmentOfSurfaceRoughnessOnAFullScalePropeller-1158-1-final.pdf
Type
Main Article
Size
5.69 MB
Format
Adobe PDF