Resistance and Self-Propulsive Characteristics of Various Commercial Ships Based on the CFD Results

摘要

This paper examines the ship-speed performances including resistance and self-propulsion characteristics of various types of commercial ships based on the computational method. For this study, eight commercial ships are selected among those recently built in a last decade at Hyundai Heavy Industries. They are four large-size container carriers, one bulk carrier, one VLCC, and two LNG carriers. The computations are carried out under identical conditions of the model tests to predict the speed performance, i.e., resistance and self-propulsion tests. The Reynolds averaged Navier-Stokes(RANS) equation has been utilized as the prediction method together with the application of Reynolds stress turbulence model. The speed performance in a full scale is obtained through analyzing the computational results in model scale according to the modelTship performance analysis method of ITTC'78 method. The limiting streamlines on the hull, the wake characteristics on the propeller plane, and the wave characteristics arpund a model ship are also investigated. After completing the computations, a series of model tests are conducted to evaluate the accuracy of the predictions by comparing the computational results with the experimental results. The computational predictions clearly show the differences of resistance and self-propulsion characteristics for various types of ships, and can be applicable to the hull-form design.