• Title/Summary/Keyword: 선속-동력 성능

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Uncertainty Analysis for Speed and Power Performance in Sea Trial using Monte Carlo Simulation (몬테카를로 시뮬레이션을 이용한 시운전 선속-동력 성능에 대한 불확실성 해석)

  • Seo, Dae-Won;Kim, Min-Su;Kim, Sang-Yeob
    • Journal of the Society of Naval Architects of Korea
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    • v.56 no.3
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    • pp.242-250
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    • 2019
  • The speed and power performance of a ship is not only a guarantee issue between the ship owner and the ship-yard, but also is related with the Energy Efficiency Design Index (EEDI) regulation. Recently, International Organization for Standardization (ISO) published the procedure of the measurement and assessment for ship speed and power at sea trial. The results of speed and power performance measured in actual sea condition must inevitably include various uncertainty factors. In this study, the influence for systematic error of shaft power measurement system was examined using the Monte Carlo simulation. It is found that the expanded uncertainty of speed and power performance is approximately ${\pm}1.2%$ at the 95% confidence level(k=2) and most of the uncertainty factor is attributed to shaft torque measurement system.

A Research on Ship Speed Performance (선박의 속력성능에 관한 연구)

  • 권영중
    • Journal of Ocean Engineering and Technology
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    • v.17 no.2
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    • pp.67-71
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    • 2003
  • Using motions (Maruo) and wave reflection (the author), speed loss due to wind (van Berlekom) and ITTC standard spectrum, and various effects of weather(:such as weather intensity, ship type, ship size and draught) on ship speed performance at sea were investigated. Further, a comparison of the relative effects of weather and hull roughness on speed loss was also studied for a VLCC.