Heterostructure channel designs for the topological interface state of surface water waves using topology optimization

National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University Harbin 150001, China, Key Laboratory for Polar Acoustics and Application of Ministry of Education, College of Underwater Acoustic Engineering, Harbin Engineering University - Harbin 150001, China and College of Underwater Acoustic Engineering, Harbin Engineering University - Harbin 150001, China

Received: 9 June 2024
Accepted: 14 August 2024

Abstract

The increase of the concentrated density of wave energy is conducive to improving the generation efficiency of wave power generation. Interface states induced in the heterostructure channels can be applied to concentrate the surface water wave. The optimal designs of heterostructure channels can be found through the topology optimization based on the multiple population genetic algorithm to induce a topological interface state with high transmission at the desired frequency. The introduction of the topological interface state effectively and steadily increases the wave energy density in a certain space and improves the robustness and the localization of the water wave concentrator. This topology optimization method provides a design scheme for the wave energy concentrator in the field of ocean engineering.