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 language | English |
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Title of host publication | Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016) |
Editors | Ulrik Dam Nielsen, Jørgen Juncher Jensen |
Number of pages | 8 |
Publisher | Technical University of Denmark |
Publication date | 2016 |
ISBN (Electronic) | 978-87-7475-473-2 |
Publication status | Published - 2016 |
Event | 13th International Symposium on Practical Design of Ships and Other Floating Structures (PRADS'2016) - Hotel Crowne Plaza, Copenhagen, Denmark Duration: 4 Sept 2016 → 8 Sept 2016 Conference number: 13 |
Conference
Conference | 13th International Symposium on Practical Design of Ships and Other Floating Structures (PRADS'2016) |
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Number | 13 |
Location | Hotel Crowne Plaza |
Country/Territory | Denmark |
City | Copenhagen |
Period | 04/09/2016 → 08/09/2016 |
Keywords
- Energy Saving Device
- Pre-Swirl Stator
- Vortex-Lattice Method
- RANS-BEM Coupling