权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

SPH For Multiphase Flows Inside a HAL Storage Tank

HAL 储罐内多相流的 SPH

基本信息

批准号：
1961431
负责人：
金额：
--
依托单位：
University of Manchester
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1961431
关键词：
SPH Multiphase Flows Inside HAL

项目摘要

This project is to use Smoothed Particle Hydrodynamics (SPH), an innovative meshless computational technique ideal for potentially violent free-surface hydrodynamics where there is strong nonlinearity with highly complex moving geometries. The research developed here will be applicable to flows in nuclear decommissioning in hydraulic structures and the heat-generating flows in the nuclear industry. The project will address the important issues of identifying the best techniques for modelling complex mixtures in the context of predicting the resultant hydrodynamics, identify effects of different mechanisms, apply to test cases involving data on deposits available in the literature and for cases provided by National Nuclear Laboratory (NNL) in the UK. More specific detail: Highly active liquor (HAL) is generated during the reprocessing of spent nuclear fuel. The resulting waste stream is corrosive, chemically complex and heat-generating. It comprises two main phases: a liquid layer and a viscous sediment, the sediment contains the majority of the activity and generates heat via radioactive decay. Prior to vitrification, the waste stream is stored in large tanks; the waste is agitated regularly to avoid the formation of local hot-spots which would otherwise enhance corrosion and reduce the facility's operational lifetime. The PhD will focus on the simulation of the complex mixtures in the agitation systems within the storage tanks. This complex multi-phase problem is not amenable to traditional modern techniques, which struggle to capture the liquid/sediment interface. The work will build upon a previous PhD project, which was completed in 2014 (Fourtakas), developing new SPH formulations using the acceleration provided by graphics processing units (GPUs) in the open-source code DualSPHysics: http://www.dual.sphysics.org

该项目将使用光滑粒子流体动力学（SPH），这是一种创新的无网格计算技术，适用于具有高度复杂运动几何形状的强非线性自由表面流体动力学。本文的研究成果对水工建筑物核退役流动和核工业中的发热流动具有一定的应用价值。该项目将解决的重要问题，确定最佳技术的复杂混合物的建模的背景下，预测所产生的流体动力学，确定不同的机制的影响，适用于测试的情况下，涉及数据的存款在文献中，并为国家核实验室（NNL）在英国提供的情况。更具体的细节：高活性液体（HAL）是在乏核燃料再处理过程中产生的。由此产生的废物流具有腐蚀性，化学成分复杂，并产生热量。它包括两个主要阶段：一个液体层和一个粘性沉积物，沉积物包含了大部分的活动，并通过放射性衰变产生热量。在玻璃化之前，废物流被储存在大罐中;定期搅动废物，以避免形成局部热点，否则会加剧腐蚀并缩短设施的运行寿命。博士将专注于模拟储罐内搅拌系统中的复杂混合物。这种复杂的多相问题不适合传统的现代技术，这些技术难以捕获液体/沉积物界面。这项工作将建立在2014年完成的博士项目（Fourtakas）的基础上，使用开源代码DualSPHysics中的图形处理单元（GPU）提供的加速来开发新的SPH公式：http://www.dual.sphysics.org