The influence of leading-edge tubercles on the hydrodynamic performance and propeller wake flow development of a ducted propeller

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Stark, Callum and Shi, Weichao (2021) The influence of leading-edge tubercles on the hydrodynamic performance and propeller wake flow development of a ducted propeller. In: The 31st (2021) International Ocean and Polar Engineering Conference, 2021-06-20 - 2021-06-25, Rhodes.

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Abstract

This study implements leading-edge (LE) tubercles on a benchmark 19A accelerating duct to investigate the impact on the hydrodynamic performance and propeller wake flow development at multiple operating conditions. The study was conducted using Computational Fluid Dynamics (CFD) where the sliding mesh technique was used to describe the propeller rotation and the hydrodynamic flow-field was solved using Improved Delayed Detached Eddy Simulations (IDDES). In summary, it was found that LE tubercles can enhance the thrust of the duct by a maximum of 7.15% and disrupt the coherent vortex structure of the benchmark ducted propeller which will likely influence the noise signature of the propulsor.

ORCID iDs

Stark, Callum ORCID logoORCID: https://orcid.org/0000-0001-7391-5197 and Shi, Weichao ORCID logoORCID: https://orcid.org/0000-0001-9730-7313;
CORE (COnnecting REpositories)