Smoothed Particle Hydrodynamics Model for Geophysical Flows

本项目正在开发一种基于离散颗粒的粘性流体数值模拟方法的新应用。该应用程序基于光滑粒子流体力学方法，其中表示流体动力学的连续介质方程以虚拟粒子的形式被局部求解。大量这样的颗粒被用来表示某一感兴趣区域内的流体。作为一种数值方法，光滑颗粒流体力学具有许多重要的优点，包括能够用流动跟踪材料的性质，在多处理器计算机上的计算效率，以及易于与颗粒模型集成以进行脆性变形。该模型正在被应用于地壳变形中的几个有趣的问题，在地壳变形中，深热地壳的粘性流动与较浅、较冷、更脆弱的上地壳相互作用。

This project is developing a new application of a method for numerical modeling of viscous fluids based on discrete particles. The application is based on a method of smoothed particle hydrodynamics in which the continuum equations representing the fluid dynamics are solved locally in terms of virtual particles. A large number of these particles are used to represent a fluid within some domain of interest. As a numerical method, smoothed particle hydrodynamics provides several important advantages including the ability to track material properties with the flow, computational efficiency on multiprocessor computers and easy integration with particle models for brittle deformation. The model is being applied to several problems of interest in deformation of the Earth's crust where viscous flow of the deep, hot crust interacts with a shallow, colder, more brittle upper crust.