论文标题
在具有弱相互作用颗粒的颗粒介质中的传热
Heat transfer in granular media with weakly interacting particles
论文作者
论文摘要
我们研究真空中弱相互作用的粒子系统中的传热。这些颗粒具有自动分形特性的表面粗糙度，如裂缝所产生的矿物颗粒所预期的，例如，通过在砂浆中处理脆性材料。我们表明，出现在所有固体之外的传播电磁（EM）波和evanevanscent EM波，分别为大小颗粒提供了主要的传热，而实际接触区域的语音贡献则可以忽略不计。作为应用程序，我们讨论了瓦砾桩小行星中的传热。
We study the heat transfer in weakly interacting particle systems in vacuum. The particles have surface roughness with self-affine fractal properties, as expected for mineral particles produced by fracture, e.g., by crunching brittle materials in a mortar. We show that the propagating electromagnetic (EM) waves and the evanescent EM-waves, which occur outside of all solids, give the dominant heat transfer for large and small particles, respectively, while the phononic contribution from the area of real contact is negligible. As an application we discuss the heat transfer in rubble pile asteroids.
