A general effective thermal conductivity model for composites reinforced by non-contact spherical particles
A general effective thermal conductivity model for composites reinforced by non-contact spherical particles
复制标题
非接触球形颗粒增强复合材料的通用有效导热模型
DOI：
10.1016/j.ijthermalsci.2021.107088
复制
发表时间：
2021-05-27
影响因子：
4.5
通讯作者：
Li, Zeng-Yao
中科院分区：
文献类型：
--
作者：
Zhu, Chuan-Yong;Yang, Wen-Xin;Li, Zeng-Yao
颗粒增强材料广泛应用于许多领域，包括能量储存、节能、热保护和热管理。这些应用往往需要准确预知这些材料的有效导热系数。虽然这类材料的有效导热系数有很多不同的模型，但对于不同类型的球形颗粒增强复合材料，包括单颗粒、混杂颗粒和核壳颗粒，仍然缺乏一个通用的、精确的模型。本文首先收集了几种常用的有效导热系数模型，并通过数值计算验证了它们的适用范围。在此基础上，对Meredith和Tobias的有效导热系数模型进行了扩展，提出了一个通用且易于使用的有效导热系数模型。该扩展的Meredith和Tobias模型被证明能够准确地预测由不同类型的球形颗粒增强的多相复合材料的有效导热系数，具有大范围的颗粒体积分数和颗粒与基体的导热系数比。
Particle reinforced materials are widely used in many areas, including energy storage, energy saving, thermal protection, and thermal management. These applications tend to require an accurate foreknowledge of the effective thermal conductivity of these materials. Although there exist many different effective thermal conductivity models for this kind of materials, a general and accurate model for the composites reinforced by different types of spherical particles, including mono-particles, hybrid particles, and core-shell particles, is still lacking. This paper firstly collected some commonly used effective thermal conductivity models and tested their scope of use by numerical results. Then, a general and easy-to-use effective thermal conductivity model was provided by extending the model of Meredith and Tobias. This extended Meredith and Tobias's model was proven to be able to accurately predict the effective thermal conductivity of multi-phase composites reinforced by different types of spherical particles with large ranges of particle volume fraction and thermal conductivity ratio of particles to the matrix.