1 results
Now showing1 - 1 of 1
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Optimisation of unconventional tip-rake propeller using panel code method(Norwegian University of Science and Technology, Department of Marine Technology, 2024-04-04); ; 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.Publicationtype: Conference Paper33 50