On the state-of-the-art of CFD simulations for WECs within the open-source numerical framework of DualSPHysics

Abstract

To improve the design practice of marine renewable energy devices, it is imperative to adopt more robust methodologies. In light of this challenge, we present a systematic review that highlights the significance of utilising the Computational Fluid Dynamics (CFD)-based DualSPHysics software as a valuable support tool during the design stages of Wave Energy Converters (WECs). DualSPHysics, which is based on the Smoothed Particle Hydrodynamics (SPH) method, is a high-fidelity software tool that is inherently well-suited for addressing the diverse challenges associated with wave-WEC interactions. WECs are responsible for converting wave energy into usable forms, such as electricity, and a key component in this process is the Power Take-Off (PTO) system. To reliably replicate the important features involved in energy transformation, DualSPHysics leverages the coupling with the multiphysics library Project Chrono and the dynamic mooring model MoorDyn+. This augmented DualSPHysics framework enables the simulation of various types of WECs, encompassing different elements such as catenary connections, taut mooring lines, and both linear and nonlinear PTO actuators. The objective of this study is twofold: to provide a comprehensive review of past applications utilising DualSPHysics and to showcase the versatility of this code in simulating a wide range of technologies within the marine renewable energy field. By demonstrating the capability of DualSPHysics in simulating diverse WEC technologies, we aim to contribute to the advancement of design practices and foster innovation in marine renewable energy.