Session: 06-04-02 Marine Engineering and Technology II

Paper Number: 125568

125568 - Effect of Forward Speed on Hydrodynamic Responses and Structural Responses of a Benchmark Vessel 

This study first validates the Ranine source model with experimental data extracted from the literature, subsequently, utilizes the model to calculate the 6-DOF motion responses and global loads of a benchmark vessel KVLCC2 at various forward speeds (0.0 knot, 5.0 knots, 10.0 knots, 15.5 knots). The effect of forward speed on hydrodynamic responses is evaluated by comparing the long-term extreme responses of 6-DOF motions at the COG and global loads along the ship length. There is a notable increasing trend of surge motion and yaw motion as forward speed increases. Whereas the pitch motion demonstrates the opposite tendency. The influence of forward speed on other motion modes seems to be negligible. As for the global loads, the impact of forward speed on vertical shear forces and vertical bending moments is not significant. While the horizontal shear forces, horizontal bending moments and torsional moments show downward trend with an increment of forward speed. Finally, this paper conducts global FE analyses of KVLCC2 at zero forward speed and design speed (15.5 knots). The comparisons of the stress responses of typical structural members at two forward speeds indicate that the effect of forward speed on structural responses does not show a consistent trend in different wave headings.

Presenting Author: Zhiping Cheng TCOMS

Presenting Author Biography: Dr Cheng Zhiping has been working on CEAOPS of TCOMS as a scientist, leading the capability development on ship structure health management. Before joining TCOMS, he had more than 10 years’ experience as a Naval Architect in Classification Society and Shipyard, with the focus on concept design and basic design of floating structures.
Zhiping obtained his PhD degree in Offshore Technology at National University of Singapore (NUS) in 2016, a master’s degree in Naval Architecture and Ocean Engineering at Dalian University of Technology, China in 2008, bachelor’s degrees in Naval Architecture (major) and Computer Science (minor) at Huazhong University of Science and Technology (HUST), China in 2005.

Authors:

Zhiping Cheng TCOMS
Yingying Chen TCOMS
Minbo Cai TCOMS