Heat Transfer During Melting of Packed Particulate Beds

对与之相关的输运现象的理解 填充颗粒床的熔化对于我们的 预测严重核事故发生过程的能力 发电厂事故，或为遏制放射性 废物通过就地玻璃化，并为广泛的 材料加工技术依赖于粉末作为一种 原料的黑曲霉 这个节目，第一次深入研究热 以及填充颗粒床熔化期间的质量传递， 包括实验和数值研究。 的 目的是确定熔化的输运性质 填充床是模拟熔化过程所必需的。 这些 性能包括有效导热性、毛细管 压力和相对渗透率。 此外，形状 融化的颗粒对于模拟 在熔化过程中发生的致密化。 的结果 这项研究将使熔化过程能够准确地 模仿的 这将允许该过程被设计为 在广泛的应用中实现预期目标 从危险废物的玻璃化到 生产新材料。

The understanding of the transport phenomena associated with the melting of packed particulate beds is critical to our ability to predict processes which occur during severe nuclear power plant accidents, or for the containment of radioactive wastes through in situ vitrification, and for a wide range of materials processing techniques which depend on powders as a raw material. This program, the first indepth study of heat and mass transfer during melting of packed particulate beds, involves both experimental and numerical research. The objective is to determine the transport properties for melting packed beds essential to modelling the melting process. These properties include effective thermal conductivity, capillary pressure, and relative permeability. In addition, the shape of melting particles is critical to modelling the densification which occurs during melting. The results of this research will enable the melting process to be accurately modelled. This will allow the process to be designed to achieve desired objectives in a wide range of applications ranging from vitrification of hazardous wastes to the production of new materials.