RANS study on hydrodynamic characteristics of flapped rudders

Jialun Liu, Robert Hekkenberg, Bingqian Zhao

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

Ships that equipped with flapped rudders have better manoeuvring performance than ships fitted with traditional spade rudders. Moreover, this advantage is achieved without significantly affecting the ship's resistance during normal cruising. Flapped rudders are, therefore, favourable for ships that require high manoeuvring performance and sail long distance. Nowadays, there is a trend of using twin flapped rudders on newly built inland vessels in the Yangtze River. To properly design these ships and analyse their manoeuvring performance, the hydrodynamic characteristics of the flapped rudders are required. In this paper, a RANS study is performed to analyse the impacts of the three main properties of a flapped rudder on its hydrodynamic coefficients. The target properties are the rudder profile, the flaplinkage ratio (the flapped angle relative to the rudder chord line divided by the applied rudder angle), and the flap-area ratio (the sectional area of the flap divided by the total sectional area). The RANS simulations are carried out with commercial meshing tool ANSYS Meshing and CFD solver ANSYS Fluent.

Original languageEnglish
Title of host publicationHonoring Symposium for Professor Carlos Guedes Soares on Marine Technology and Ocean Engineering
Subtitle of host publicationProceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
Place of PublicationNew York, NY, USA
PublisherASME
Number of pages11
Volume11B
ISBN (Electronic)978-0-7918-5133-3
DOIs
Publication statusPublished - 2018
EventASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 - Madrid, Spain
Duration: 17 Jun 201822 Jun 2018

Publication series

NameASME Conference Proceedings
Volume2018/11B

Conference

ConferenceASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018
CountrySpain
CityMadrid
Period17/06/1822/06/18

Keywords

  • Reynolds-averaged Navier–Stokes equations

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