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http://dx.doi.org/10.3744/SNAK.2010.47.2.150

Wake Comparison between Model and Full Scale Ships Using CFD  

Yang, Hae-Uk (Department of Ocean Engineering, Mokpo National University)
Kim, Byoung-Nam (Research Institute of Medium & Small Shipbuilding)
Yoo, Jae-Hoon (Department of Ocean Engineering, Mokpo National University)
Kim, Wu-Joan (Department of Ocean Engineering, Mokpo National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.47, no.2, 2010 , pp. 150-162 More about this Journal
Abstract
Assessment of hydrodynamic performance of a ship hull has been focused on a model ship rather than a full-scale ship. In order to design the propeller of a ship, model-scale wake is often extended to full-scale based upon an empirical method or designer's experience, since wake measurement data for a full-scale ship is very rare. Recently modern CFD tools made some success in reproducing wake field of a model ship, which implicates that there are some possibilities of the accurate prediction of full-scale wakes. In this paper firstly the evaluation of model-scale wake obtained by Fluent package was performed. It was found that CFD calculation with the Reynolds-stress model (RSM) provided much better agreement with wake measurement in the towing tank than with the realizable k-$\varepsilon$ model (RKE). In the next full-scale wake was calculated using the same package to find out the difference between model and full-scale wakes. Three hull forms of KLNG, KCS, KVLCC2 having measurement data open for the public, were chosen for the comparison of resistance, form factor, and propeller plane wake between model ships and full-scale ships.
Keywords
CFD; Stern viscous boundary layer; Wake; Model ship; Full-scale ship;
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Times Cited By KSCI : 5  (Citation Analysis)
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