Pre-Swirl Stator and Propeller Design for Varying Operating Conditions

Simone Saettone, Pelle Bo Regener, Poul Andersen

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    Abstract

    Over the last two decades, an increasing number of studies have been conducted to develop and improve energy saving devices (ESDs) in order to increase the propulsive effciency. One well-known example is the pre-swirlstator (PSS), which consists of an often asymmetric arrangement of fixed stator blades ahead of the propeller.This paper describes the hydrodynamic design of apre-swirl stator with radially variable pitch, paired with aconventional propeller. The aim is to achieve the highest possible effciency in various operating conditions, and to avoid effciency penalties in off-design operation.To investigate the propeller and stator designs and configurations in different operating conditions, the computationally inexpensive vortex-lattice method is used a sa first step to optimize the geometry in an initial parameter study. Then the flow over hull, stator and propelleris simulated in a CFD-based approach to confirm the results obtained in the first stage.
    Original languageEnglish
    Title of host publicationProceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016)
    EditorsUlrik Dam Nielsen, Jørgen Juncher Jensen
    Number of pages8
    PublisherTechnical University of Denmark
    Publication date2016
    ISBN (Electronic)978-87-7475-473-2
    Publication statusPublished - 2016
    Event13th International Symposium on Practical Design of Ships and Other Floating Structures (PRADS'2016) - Hotel Crowne Plaza, Copenhagen, Denmark
    Duration: 4 Sept 20168 Sept 2016
    Conference number: 13

    Conference

    Conference13th International Symposium on Practical Design of Ships and Other Floating Structures (PRADS'2016)
    Number13
    LocationHotel Crowne Plaza
    Country/TerritoryDenmark
    CityCopenhagen
    Period04/09/201608/09/2016

    Keywords

    • Energy Saving Device
    • Pre-Swirl Stator
    • Vortex-Lattice Method
    • RANS-BEM Coupling

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