热超构材料的时间相关非互易传热性能

Aiming at the artificially-designed nonreciprocal heat transfer metamaterials employed in wide applications, a study was conducted on the nonreciprocal heat transfer in thermal metamaterials under transient conditions based on the parameter mismatch criterion. The necessary and sufficient conditions for the existence of time-dependent nonreciprocal thermal metamaterials were deduced and verified via simulation. This study clearly revealed the nonreciprocal heat transfer phenomena of a system with constant thermal conductivity and gradient distribution of density-specific heat capacity. Moreover, it will stimulate the development of fields, including macroscopic thermal diode, thermal management, and thermal computing.