Session: 08-06-01 non-presentations

Paper Number: 126951

126951 - Simulating Seakeeping Performance of Deformable Ocean Structures Under Wind, Wave, and Current Effects Using Three-Dimensional Ibm-Vof-Fem Method 

Abstract: To address the challenges in numerically simulating the behavior of deformable structures floating on water surfaces under the influence of wind and waves within a complex oceanic environment, we propose a three-dimensional IBM-VOF-FEM method. This approach aims to accurately simulate the coupled multi-physics phenomena by adequately describing the movement of three-dimensional deformable structures floating on the water surface, accurately capturing the free surface of the fluid, precisely modeling the deformable boundaries, and calculating fluid-structure interactions. The method employs the Immersed Boundary Method (IBM) and the Volume-of-Fluid (VOF) approach to model fluid-solid interactions, and Finite Element Method (FEM) to simulate solid deformation. Cartesian grid discretization is adopted to effectively handle the computations. The IBM is utilized to track the movement and deformation of the boundaries, providing the necessary coupling forces, while the VOF method accurately captures the air-fluid interface. Extensive computational cases were conducted to validate the proposed method, including simulations of the motion of rigid spheres and cylinders floating under wave conditions, as well as simulations with deformable floating structures. Furthermore, simulations of ships navigating on the sea under wind and wave loads were performed to analyze the seakeeping performance under different operating conditions. The three-dimensional IBM-VOF-FEM method exhibits a high level of accuracy in capturing fluid-structure interactions and providing detailed flow field information.

Keywords: Three-Dimensional IBM-VOF-FEM Method, Deformable structures, fluid-structure interactions, immersed boundary method.

Presenting Author: 景泽 黄 大连理工大学

Presenting Author Biography: Bachelor's degree in Shandong University, master's degree in Dalian University of Technology, current research direction is fluid-structure interaction program calculation, in the program using the immersion boundary method to deal with the fluid-solid interface and combined with Volume of Fluid to process multiphase flow in fluid media, on this basis with discrete element solid particle calculation program coupling simulation, to achieve the application of IBM-FVM-DEM coupling program for large-scale calculation.

Authors:

Jingze Huang Dalian University of Technology
Zhijun Wei Dalian University of Technology