变换热学与热能调控

Transformation thermotics and the manipulation of thermal energy

如果热流大小和热流流向能像固体中的电流一样被调控,则将使热能调控拥有更广阔的应用前景。宏观热能调控最重要的手段是构建热功能材料,通过对宏观热扩散方程的空间变换,实现空间热导系统的非均匀分布,从而有效调控热流流向。这类基于变换热学的新型热功能材料可以实现热隐身与热伪装。

Thermal energy has been proposed to have ever greater potential for human beings if the heat carriers, i.e phonons can be controlled in micron scale as easy as its counterpart, electrons in solid. Alternatively, in macroscopical scale, functional thermal materials are used to control thermal energy. The transformation of macroscopical thermal diffusion equation is proposed to obtain the asymmetrical thermal conductivity in real space. This new type of thermal functional materials helps to control heat flow and to realize thermal cloak and thermal camouflage.