Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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CFD Analysis of Performance of KRISO Devices (K-DUCT) for Propulsion Efficiency Improvement

CFD를 이용한 KRISO 추진효율 향상 장치(K-duct)의 성능 해석

  • Suh, Sung-Bu (Department of Naval Architecture and Ocean Engineering)
  • 서성부 (동의대학교 조선해양공학과)
  • Received : 2017.04.07
  • Accepted : 2017.04.20
  • Published : 2017.06.30
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Abstract

This paper provides numerical results for the estimation of the efficiency of KRISO energy saving devices in the design stage. A finite volume method is used to solve Reynolds averaged Navier-Stokes (RANS) equations, where the SST k-$\omega$ model is selected for turbulence closure. The propeller rotating motion is determined using a rigid body motion (RBM) scheme, which is called a sliding mesh technique. The numerical analysis focuses on predicting the power reduction by the designed KRISO devices (K-DUCT) under a self-propulsion condition. The present numerical results show good agreement with the available experimental data. Finally, it is concluded that CFD can be a useful method, along with model tests, for assessing the performance of energy saving devices for propulsion efficiency improvement.

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