Journal of Ship and Ocean Technology

The Society of Naval Architects of Korea (대한조선학회)
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Prediction of Ship Manoeuvrability in Initial Design Stage Using CFD Based Calculation

  • Cho, Yu-Rim (Dept. of Naval Architecture & Ocean Engineering, Univ. of Ulsan) ;
  • Yoon, Bum-Sang (Dept. of Naval Architecture & Ocean Engineering, Univ. of Ulsan) ;
  • Yum, Deuk-Joon (Dept. of Naval Architecture & Ocean Engineering, Univ. of Ulsan) ;
  • Lee, Myen-Sik (Hyundai Mipo Dockyard)
  • Published : 2007.03.31
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Abstract

Better prediction of a ship's manouevrabilty in initial design stage is becoming more, important as IMO manoeuvring criteria has been activated in the year of 2004. In the present study, in order to obtain more exact and reliable results for ship manoeuvrability in the initial design stage, numerical simulation is carried out by use of RANS equation based calculation of hydrodynamic forces exerted upon the ship hull. Other forces such as rudder force and propeller force are estimated by one of the empirical models recommended by MMG Group. Calculated hydrodynamic force coefficients are compared with those obtained by empirical models. Standard manoeuvring simulations such as turning circle and zig-zag are also carried out for a medium size Product Carrier and the results are compared with those of pure empirical models and manoeuvring sea trial. Generally good qualitative agreement is obtained in hydrodynamic forces due to steady oblique motion and steady turning motion between the results of CFD calculation and those of MMG model, which is based on empirical formulas. The results of standard manoeuvring simulation also show good agreement with sea trial results.

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