Massively parallelized models of fluid-solid multiphase flow

流固多相流的大规模并行模型

• 批准号: 1947723
• 金额: --
• 依托单位: University of Leeds
• 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-1947723
• 关键词: Massively; parallelized; models; fluid; solid

A key problem in environmental and industrial fluid dynamics is the ability to efficiently numerically model the transport of particulate material within a flow coupled with aggradation and/or erosion of stationary particulate material from boundaries (e.g. sediment bed). This challenge has remained largely unresolved as particle transport is controlled by the small-scale processes of turbulent flow whilst the system scales of interest may be many orders of magnitude larger. Examples include: sediment transport in environmental flows, from mountain rivers to deep oceans; wastewater transport in pipes; combustion dynamics; and chemical and pharmaceutical production. In environmental systems, in particular, hydrodynamics of the flow (e.g. rivers, estuaries, coasts etc.) are dependent on the morphodynamics of the bed. Understanding of the coupling between hydro- and morphodynamics is essential in land and marine use management and geohazard prediction and mitigation. In this research project, an in-house Lattice Boltzmann Method (LBM) code, which was written to run on massively parallel Graphics Processing Units (GPUs), will be further developed to study multiphase fluid-solid flows with environmental context.

环境和工业流体动力学中的一个关键问题是能够有效地数值模拟颗粒物质在流动中与边界（例如沉积物床）的固定颗粒物质的积聚和/或侵蚀相结合的传输。这一挑战在很大程度上仍未得到解决，因为粒子输运是由湍流的小尺度过程控制的，而感兴趣的系统尺度可能要大很多数量级。例子包括：环境流中的沉积物运输，从山地河流到深海；污水管道输送；燃烧动力学;以及化工和医药生产。特别是在环境系统中，水流的流体动力学（如河流、河口、海岸等）取决于河床的形态动力学。了解水动力学和形态动力学之间的耦合对于土地和海洋利用管理以及地质灾害预测和减轻至关重要。在这个研究项目中，将进一步开发一个内部格子玻尔兹曼方法（LBM）代码，该代码是为在大规模并行图形处理单元（gpu）上运行而编写的，用于研究环境背景下的多相流固流动。