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- W2793186921 abstract "Global market development, increasing environmental concerns and incessant risingfuel prices demand for high-grade efficient propulsion systems. This puts high pressureon the propeller designer to develop well-engineered and customized propellerdesign in a short timeframe. The design under development is always unique andrequires individual consideration on several constraints. The objective of this researchproject is to improve the academic state-of-the-art in automatic propellerdesign optimisation in terms of several design constraints and optimisation procedures.The first part of the work, presented in this thesis, contains the further developmentof cavitation constraints that can be achieved by low-fidelity numerical methods, e.g.potential methods like vortex lattice method (VLM). Attempts were made to recognizeand constrain certain types of cavities, based on sheet cavity prediction likeprimary cavities that tend to evolve to erosive cavitation, rather than the totalamount of cavitation. Automated optimisations of the blade geometry were carriedout, utilizing a combination of a Reynolds-Averaged Navier-Stokes (RANS) solverand a VLM based propeller analysis code, in a multi-objective setup, incorporatingthis concept and allow for harmless cavitation.A second part addresses the improvements of computational costs in automatedoptimisation approaches. Several response surface methodologies (RSM) were investigatedto exclusively determine the propeller performance, including constraints,in a multi-objective optimisation." @default.
- W2793186921 created "2018-03-29" @default.
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- W2793186921 date "2012-01-01" @default.
- W2793186921 modified "2023-09-27" @default.
- W2793186921 title "Methods for Constrained Optimisation of Propellers" @default.
- W2793186921 hasPublicationYear "2012" @default.
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