Abstract
In this study, experimental and numerical methods were applied to estimate surge and sway wave drift forces and yaw drift moment acting on KVLCC2, advancing in oblique wave. An experiment was carried out in the ocean engineering basin of the Korea Research Institute of Ships and Ocean Engineering (KRISO). A series of regular wave tests under various heading conditions were conducted to investigate ship motion responses and wave drift forces. A Rankine panel method based on potential flow was adopted in the numerical analysis, and the direct pressure integration method that integrates second-order pressure on the hull surface was applied to compute wave drift force. Through this study, validation data of wave drift force acting on KVLCC2 was established, and the computation capability of the potential-based numerical method was systematically analyzed.
Highlights
The energy efficient design index (EEDI) was recently proposed by the InternationalMaritime Organization (IMO) to restrict greenhouse gas emissions from sailing ships, as required by the InternationalMaritime Organization (IMO) mandatory regulation since 2013 [1]
The wave drift forces acting on a ship are dominantly affected by the ship’s motion responses as well as the surrounding wave fields; the motion responses of the ship must be predicted with high accuracy
The x-axis represents the wavelength divided by the ship length, whereas the y-axis represents the motion response amplitude operator operator (RAO) normalized by the wave amplitude
Summary
Maritime Organization (IMO) to restrict greenhouse gas emissions from sailing ships, as required by the IMO mandatory regulation since 2013 [1]. The estimated CO2 emission should be below the reference line according to the regulatory standard. The EEDI regulation has been strengthened over time, and various efforts have been made to satisfy it. One of the most effective ways to satisfy the EEDI regulation is slow steaming, which can reduce CO2 emissions as well as fuel consumption. Slow steaming has serious issues such as longer time to transport the cargo, adverse effects on the engine, and concerns regarding the stability of a new vessel equipped with a small engine. Stability issues of vessels with a small engine are frequently reported, and the Marine Environment Protection
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