Han Liu

Shanghai Jiao Tong University | SJTU · Department of Naval Architecture and Ocean Engineering

The maneuverability of a submersible in the vertical plane is investigated. For this purpose, extensive experiments are performed on a half-scale SUBOFF model in the circulating water channel (CWC) with the planar motion mechanism (PMM). Oblique towing tests containing high attack angles, pure heave tests and pure pitch tests are involved. The vali...

When the ship speed exceeds a certain level in shallow water, ship-bank interaction induces great influence on the ship’s manoeurability with some special hydrodynamic characteristics, but the mechanism is not totally understood. This paper presents a numerical prediction of the ship-bank interaction for the model of the KRISO Container Ship. An un...

This paper presents a systematic model test program to assess the uncertainty of the ship-bank interaction forces, using the planar motion mechanism (PMM) system in a circulating water channel (CWC). Therefore, the uncertainties due to ship-bank distance and water depth are considered, and they are calculated via the partial differentials of the re...

In order to assess the influence of ship-bank interaction on ship manoeuvring motion, planar motion mechanism (PMM) tests on a scale model of the KRISO very large crude carrier (KVLCC2) are conducted in different water depths in circulating water channel (CWC). The asymmetric hydrodynamic derivatives are defined to characterize the bank effect, and...

Since ship-bank interaction affects the manoeuvrability of a ship navigating close to a bank, the determination of hydrodynamic derivatives is of great importance to assess the ship manoeuvrability. To obtain the hydrodynamic derivatives of the KVLCC2 model ship with different water depths and ship-bank distances, the simulation of PMM tests are ca...

This study presents a performance-based approach to evaluate the probability of course keeping failure and ship-bank collision for a container ship passing a channel according to the probability distribution of wind condition and ship-bank distance. The Monte Carlo simulation approach is applied to conduct substantial simulations of the ship manoeu...

Ship navigation safety in restricted water areas is of great concern to crew members, because ships sailing in close proximity to banks are significantly affected by the so‐called ship‐bank interaction. The purpose of this paper is to apply the optimal control theory to help helmsmen adjust ships’ course and maintain the target course in restricted...

To assess the influence of ship-bank interactions on the course keeping ability of ships, Planar Motion Mechanism (PMM) tests on a scale model of the KVLCC2 tanker were conducted in a circulating water channel (CWC) at different ship-bank distances and speeds. To characterize the asymmetric hydrodynamic features, the asymmetric hydrodynamic derivat...

As the maneuverability of a ship navigating close to a bank is influenced by the sidewall, the assessment of ship maneuvering stability is important. The hydrodynamic derivatives measured by the planar motion mechanism (PMM) test provide a way to predict the change of ship maneuverability. This paper presents a numerical simulation of PMM model tes...

Ship-bank interaction has a remarkable influence on the manoeuvrability of a ship proceeding close to a bank. The aim of the work is to investigate the effects of ship-bank interaction on the ship course keeping ability in close proximity to a vertical bank on the condition of deep water. The Planar Motion Mechanism (PMM) tests of a KVLCC2 model sh...

Precise vertical positioning has a very significant impact on the accuracy and reliability of the Remotely Operated Vehicle (ROV) working process. This paper establishes an experimental system which is capable of controlling and measuring the vertical position of ROV. The control signal output system is developed by integrating certain modules such...

As bank effect has a remarkable influence on the maneuverability of a ship proceeding close to a vertical bank, the assessment of ship maneuvering stability is of great importance. The hydrodynamic derivatives of a ship can reflect the change of the ship’s maneuverability and they are determined with the method of planar motion mechanism (PMM) test...

To investigate the hydrodynamic characteristics of a large ship in laterally restricted water, this paper simulated the PMM test based on the computational fluid dynamics (CFD) technique. In order to realize the dynamic simulation of the planar motion mechanism (PMM) test limited by water width, a hybrid dynamic mesh technique was proposed. The pro...

Since ship maneuverability is a vitally important characteristic of ship design, several experimental techniques to determine ship maneuverability are recommended, among which using the planar motion mechanism (PMM) test for captive model in a circulating water channel (CWC) has become a new and effective way for captive model tests. This paper use...