Prediction of Ship Manoeuvring Performance Based on Virtual Captive Model Tests

Abstract

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License(http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.For the more accurate prediction on manoeuvring performance of a ship at initial design phase, bare hull manoeuvring coefficients were estimated by RANS(Reynolds Averaged Navier-Stokes) based virtual captive model tests. Hydrodynamic forces and moment acting on the hull during static drift and harmonic oscillatory motions were computed with a commercial RANS code STAR-CCM+. Automatic and consistent mesh generation could be implemented by using macro functions of the code and user dependency could be greatly reduced. Computed forces and moments on KCS and KVLCC 1&2 were compared with the corresponding measurements from PMM(Planar Motion Mechanism) tests. Quite good agreement can be observed between the CFD and EFD results. Manoeuvring coefficients and IMO standard manoeuvres estimated from the computed data also showed reasonable agreement with those from the experimental data. Based on these results, we could confirm that the developed virtual captive manoeuvring model test process could be applied to evaluate manoeuvrability of a ship at the initial hull design phase.

Ship Maneuvering Prediction Using Grey Box Framework via Adaptive RM-SVM with Minor Rudder

“…By using Equation (10), the 20°/20° zigzag maneuver was predicted and the heading, velocities, and trajectory were acquired. Then, the results were compared with those of the CFD method from Hyundai Maritime Research Institute (HMRI) presented by Sung [32] and model experiments from NMRI presented by Yasukawa [33]. The results of the above three methods were further compared with those from the free running model test called EXP-MARIN and performed at the Maritime Research Institute Netherlands (MARIN).…”

“…The results of the above three methods were further compared with those from the free running model test called EXP-MARIN and performed at the Maritime Research Institute Netherlands (MARIN). However, the studies [32] and [33] have included headings rather than velocities. The variables presented in Figure 7 were made dimensionless using the method proposed by Norrbin [29].…”

A Study on the Sensitivity Analysis of the Hydrodynamic Derivatives on the Maneuverability of Kvlcc2 in Shallow Water

“…The value of k , which determined the variation of hydrodynamic derivatives, is taken to be equal to 20% for the sensitivity analysis of the present study, because the hydrodynamic forces and derivatives are predicted within 20% of error by using CFD tool and viscous flow calculations in generally. (Zuo, et al, 2010, Toxopeus et al, 2013, Sung, et al, 2015 Furthermore, the sensitivity index is identical because the variation of response parameters is linearly increased or decreased when the k is increased or decreased according to the study of Furukawa (2016). The sensitivity analysis results for deep water maneuvers are compared with the sensitivity index with that for shallow water maneuvers.…”

Predictions of ship maneuverability based on virtual captive model tests

“…But few get the full set of the hydrodynamic derivatives/coefficients by this method. Most researchers used a modular model such as the MMG model in which the hull-rudder-propeller interaction coefficients were obtained by empirical formulae (He et al, 2016;Shenoi et al, 2016) or model tests (Sung et al, 2015). Others using the Abkowitz model simplified the mathematical model (Otzen & Simonsen, 2014;Simonsen et al, 2012).…”

“…Sakamoto, Carrica, and Stern (2012) conducted unsteady RANS (URANS) simulations of static and dynamic PMM tests for an un-appended surface combatant model 5415. Sung, Park, and Jun (2015) developed an easy procedure of virtual captive model tests to obtain the linear and nonlinear hydrodynamic derivatives for un-appended KCS and KVLCC1 & 2. He et al (2016) computed the linear hydrodynamic derivatives of the KVLCC2 ship model by numerically simulating pure sway and pure yaw tests and performed the standard free running maneuvers using MMG mathematical model.…”