文献类型：期刊文献

英文题名：Optimal design of maximally amplified thermal concentrators with homogeneous and isotropic materials

作者：Wu, Chen -Long[1];Wang, Bin[1];Wang, Hao[1];Yao, Neng-Zhi[1];Wang, Xuesheng[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：152

外文期刊名：INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

收录：;EI(收录号：20241015690241);WOS:【SCI-EXPANDED(收录号:WOS:001205819700001)】；

基金：This work is supported by National Natural Science Foundation of China (Grants No. 12205102) , and by Shanghai Science and Technology Development Funds (Grant No. 22YF1410600) .

语种：英文

外文关键词：Particle swarm optimization; Thermal concentrators; Bilayer structure; Inverse design; Optimal amplification

摘要：In recent years, thermal metamaterials have garnered significant interest due to their remarkable potential for manipulating thermal fields, leading to the development of thermal metadevices. However, most thermal metadevices are based on coordinate transformation theory, which associates spatial distortions and transformations with material parameters, resulting in inhomogeneous and anisotropic properties that complicate practical applications. In this study, we present matching relations and the particle swarm optimized inverse design methodology for the design of maximally amplified thermal concentrators with elliptical-cylinder and circularcylinder geometries, which possess thermally-hidden Venturi effects and are made of homogeneous and isotropic materials. To achieve the optimal design, the bilayer thermal concentration issue is converted into an optimization problem that the amplification performance guides the design process. Thus, the orientations of concentrators, the thermal conductivities of concentrators, as well as the thickness ratio of the inner and outer layers required to achieve the maximum amplification performance on the premise of minimum disturbance to the external temperature fields are obtained. Finally, the proposed optimization method is not limited to thermal concentrators and can be extended to other physical fields, such as acoustic concentrators, electromagnetic concentrators, and hydrodynamic concentrators, among others.