Session: 08-01-03 Ship Design and Surface Wave Effects I

Paper Number: 124616

124616 - Numerical Investigation on Hydroelastic Response of a Model Ship in Regular Head Waves 

Abstract：With the increasing size of ships, their flexibility plays a more and more important role in ship motion predictions. However, existing numerical prediction of ship motion in regular waves usually does not consider the elastic response of the ship, which often regards the ship as a rigid body. Therefore, hydroelastic effects on ship motion need to be taken into account in the research. With the continuous progress of advanced research, many studies on ship hydroelastic response have emerged, but most of them still stay in the hydroelasticity theories based on potential flow theory or the one-way coupling numerical simulation based on RANS/CFD and FEM. To strengthen the interaction between fluid and structure, this paper uses the two-way coupling between fluid solver Star-CCM+ and finite element software Abaqus to calculate the RAOs of a model ship and impact pressure at different measuring points in regular head waves. The two-way coupling method exchanges real-time data of pressure and nodal displacements between the fluid domain in Star-CCM+ and the three-dimensional structural model in Abaqus, and uses the mesh morphing method to simulate the motion of the ship. The computational results are compared with the solution of the rigid body calculated by Star-CCM+, the results predicted by fluid solver ANSYS-AQWA based on three-dimensional potential flow theory and model test results, which verifies the feasibility of the two-way coupling method.

Keywords：Hydroelasticity; Fluid-Structure interaction; CFD; Symmetric motion; Two-way coupling

Presenting Author: Hanwen Zhang Wuhan University of Technology

Presenting Author Biography: Zhang Hanwen received the B.S. degree in Ship and Ocean Engineering from Wuhan University of Technology in Wuhan, China in 2020. Later, he continued his master's and doctoral studies in the same school. Currently, he is pursuing the Ph.D. degree in Ship and Ocean Engineering with the School of Wuhan University of Technology, Wuhan, China. His research interests include ship hydroelasticity and soft grounding.

Authors:

Hanwen Zhang Wuhan University of Technology
Ling Zhu Wuhan University of Technology
Qiyu Liang Wuhan University of Technology
Shaoling Dai Huanghai Shipbuilding Co., Ltd,