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Optimisation of unconventional tip-rake propeller using panel code method
Citation Link: https://doi.org/10.15480/882.9311
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
Author(s)
Mecklenburger Metallguss GmbH, Waren, Germany
Mecklenburger Metallguss GmbH, Waren, Germany
Mecklenburger Metallguss GmbH, Waren, Germany
TORE-DOI
Start Page
125
End Page
131
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 paper aims to optimise an unconventional tip rake design for maximum efficiency. The initial propeller geometry used for the investigation is a conventional single screw design developed for container ships. A parametric model of the initial blade is generated and is further modified to add a raked tip. Raked tip is governed by a set of variables defining the shape and extent of the rake, ensuring smooth transition.
Two initial designs are created, a conventional design and a tip raked design of the conventional design. These are numerically evaluated using RANSE based analysis and panel method to create a correlation factor. The parametrised model is connected to an optimisation tool which systematically varies propeller characteristics and the variables controlling raked tip. OWT of the generated designs is numerical evaluated using panel method and corrected against RANSE based calculation using correlation factors. Tangent search method is used to maximise open water efficiency. Subsequently, a propulsion prognosis is evaluated by interpolation using KT under the assumption of fixed propulsion coefficients. Constraints are imposed to filter designs outside a certain light running margin. The optimised results are compared against RANSE based results to ensure its validity.
Two initial designs are created, a conventional design and a tip raked design of the conventional design. These are numerically evaluated using RANSE based analysis and panel method to create a correlation factor. The parametrised model is connected to an optimisation tool which systematically varies propeller characteristics and the variables controlling raked tip. OWT of the generated designs is numerical evaluated using panel method and corrected against RANSE based calculation using correlation factors. Tangent search method is used to maximise open water efficiency. Subsequently, a propulsion prognosis is evaluated by interpolation using KT under the assumption of fixed propulsion coefficients. Constraints are imposed to filter designs outside a certain light running margin. The optimised results are compared against RANSE based results to ensure its validity.
Subjects
Optimisation
Unconventional design
Parameterisation
Tip raked propeller
DDC Class
620: Engineering
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Name
MAsif-OptimisationOfUnconventionalTiprakePropellerUsingPanelCodeMethod-1122-1-final.pdf
Type
Main Article
Size
1.39 MB
Format
Adobe PDF