Optimization-based design of a heat flux concentrator.
Optimization-based design of a heat flux concentrator.
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DOI：
10.1038/srep40591
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发表时间：
2017-01-13
影响因子：
4.6
通讯作者：
Ciarbonetti ÁA
中科院分区：
文献类型：
--
作者：
Peralta I;Fachinotti VD;Ciarbonetti ÁA
To gain control over the diffusive heat flux in a given domain, one needs to engineer a thermal metamaterial with a specific distribution of the generally anisotropic thermal conductivity throughout the domain. Until now, the appropriate conductivity distribution was usually determined using transformation thermodynamics. By this way, only a few particular cases of heat flux control in simple domains having simple boundary conditions were studied. Thermal metamaterials based on optimization algorithm provides superior properties compared to those using the previous methods. As a more general approach, we propose to define the heat control problem as an optimization problem where we minimize the error in guiding the heat flux in a given way, taking as design variables the parameters that define the variable microstructure of the metamaterial. In the present study we numerically demonstrate the ability to manipulate heat flux by designing a device to concentrate the thermal energy to its center without disturbing the temperature profile outside it.
