Design of the pre-controlled thermal-electric ultra-conductive metamaterials without extra energy payloads

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Thermal Sciences Pub Date : 2024-10-28 DOI:10.1016/j.ijthermalsci.2024.109494

Huolei Feng , Wenyi Ma , Yushan Ni

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Abstract

The passive thermal-electric ultra-conductive metamaterials (PTUM) consisting of bulk natural materials are reported, which possess the local pre-controlled thermal-electric ultra-conductivities without extra energy payloads. Based on the local resistances regulated by the vertical transport channels, the thermal-electric effective parameters at the circular channel-interphase region are derived. Then, we present a method to make the designed channel suitable for both tempetature and electric potential fields simultaneously and analyze some manipulation factors modulating the thermal-electric ultra-conductivities. Based on the modulation effects, the PTUM with different pre-controlled parameters could be constructed by changing the height of the channels, which are demonstrated by the numerical simulations. Additionally, in order to validate the reliability of the construction theories, the normalized theoretical temperatures and electric potentials are provided to make a fair contrast with the normalized corresponding simulated values. The good coincidence between the simulated values and theoretical solutions indicates that we can realize the local thermal-electric ultra-conductivities by introducing the channels with different heights. Furthermore, we present some applications of pre-controlled PTUM to reveal the passive thermal-electric ultra-conductive effects and the utilization directions, such as the thermal-electric ultra-conductive metal plate and the ultra-conductive thermal-electric concentrator and cloak. This paper may provide a method to achieve the passive ultra-conductive metamaterials suitable for both temperature and electric potential fields simultaneously using the natural materials in general application environments.

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设计无需额外能量载荷的预控热电超导超材料

本文报道了由块状天然材料组成的无源热电超导超材料（PTUM），这种超材料具有局部预控热电超导性，无需额外的能量载荷。根据垂直传输通道调节的局部电阻，我们推导出了圆形通道相间区域的热电有效参数。然后，我们提出了一种使所设计的通道同时适用于温度场和电势场的方法，并分析了一些调节热电超导的操作因素。基于调制效应，我们可以通过改变通道的高度来构建具有不同预控参数的 PTUM，并通过数值模拟进行了验证。此外，为了验证构建理论的可靠性，还提供了归一化的理论温度和电动势，以便与归一化的相应模拟值进行公平对比。模拟值与理论解之间的良好吻合表明，我们可以通过引入不同高度的通道来实现局部热电超导。此外，我们还介绍了预控 PTUM 的一些应用，以揭示被动热电超导效应和利用方向，如热电超导金属板、超导热电聚光器和斗篷等。本文可为在一般应用环境中利用天然材料同时实现适合温度场和电势场的被动超导超材料提供一种方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.