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9.935 Lectures/texts in conference proceedings
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  • International Conference on Computational Methods in Marine Engineering - MARINE
  • VII International Conference on Computational Methods in Marine Engineering (MARINE 2017) Nantes, France, 15-17 May, 2017
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  • International Conference on Computational Methods in Marine Engineering - MARINE
  • VII International Conference on Computational Methods in Marine Engineering (MARINE 2017) Nantes, France, 15-17 May, 2017
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Propeller nozzles design using viscous codes and optimization algorithms

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Cita com:
hdl:2117/331050

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Gaggero, Stefano
Villa, Diego
Tani, Giorgio
Viviani, Michele
Document typeConference report
Defense date2017
PublisherCIMNE
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Marine propellers design requirements are always more pressing and the application of unusual propulsive configurations, like ducted propellers with decelerating nozzles, may represent a valuable alternative to fulfil stringent design constraints. If accelerating duct configurations were realized mainly to increase the propeller efficiency in highly-loaded conditions, decelerating nozzles sustains the postponing of the cavitating phenomena that reflects into reduction of vibrations and radiated noise. The design of decelerating nozzle, unfortunately, is still challenging. No extensive systematic series are available and the design relies on few measurements. On the other hand, viscous flow solvers appear as reliable and accurate tools for the prediction of complex flow fields. Hence, in the present paper the opportunity to use CFD as a part of a design procedure based on optimization, by combining a parametric description of the geometry, the OpenFOAM solver and a genetic type algorithm in the ModeFrontier environment, is investigated. Design improvements for both accelerating and decelerating ducts are measured by comparing the performance of the optimized geometries with those of conventional shapes available in literature.
CitationGaggero, S. [et al.]. Propeller nozzles design using viscous codes and optimization algorithms. A: MARINE VI. "MARINE VI : proceedings of the VI International Conference on Computational Methods in Marine Engineering". CIMNE, 2017, p. 234-255. ISBN 978-84-943928-6-3. 
URIhttp://hdl.handle.net/2117/331050
ISBN978-84-943928-6-3
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  • International Conference on Computational Methods in Marine Engineering - MARINE - VII International Conference on Computational Methods in Marine Engineering (MARINE 2017) Nantes, France, 15-17 May, 2017 [92]
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