Use of multiscale particle simulations in the design of nuclear plant decommissioning

作     者：Richard A. Williams Xiaodong Jia Peter Ikin David Knight 

作者机构：Institute of Particle Science and Engineering School of Process Environmental and Materials Engineering University of Leeds LS2 9iT UK Structure Vision Ltd. Leeds Innovation Centre 103 Clarendon Road Leeds LS2 9DF UK 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2011年第9卷第4期

页      面：358-364页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the UK Engineeringand Physical Sciences Research Council Knowledge Secondment Scheme 

主　　题：Cementation Digital packing Digipac Discrete element modelling Nuclear waste NuPlant Particle shape 

摘      要：The application of a digital modelling method that can faithfully take account of three-dimensional shape and inherent physical and chemical properties of each particulate component provides an essential tool in decommissioning design. This is useful in handling of high, medium and low level radioactive waste. The processes involve making decisions on where to cut existing plant components and then how to pack these components into boxes, which are then cemented and kept for long term storage as the level of radioactive declines with time. We illustrate the utility of the method and its ability to take data at plant scale （m-scale） and then deduce behaviours at sub millimetre scale in the packed containers. A variety of modelling approaches are used as a part of this approach including cutting algorithms, geometric and dynamic （distinct element） force models, and lattice Boltzmann methods. These methods are applicable to other complex particulate systems including simulation of waste, building recycling, heap leaching and related minerals processes. The paper introduces the basic concepts of this multi-scale and multi-model approach.