摘要
本文描述一种应用于河冰和海冰动力学研究的平滑质点流体力学的离散元模式。该离散元方法是一种自由拉格郎日方法，和传统的欧拉网格数值方法相比，它具有较小的数值扩散并且能够更加灵活地处理复杂的冰过程等许多优点。本文首先给出海冰动力学的离散元模式的基本方法，并与欧拉有限差分方法和半拉格郎日的质点一网格方法进行了对比，其次，本文还给出了离散元海冰模式在渤海的一个应用。
A discrete-parcel model with smoothed particle hydrodynamics for river and sea ice dynamics is presented. The discrete-parcel method is a free Lagrangian method, which has many advantages over the traditional Eulerian grid-base numerical methods. It has less numerical diffusion and is more flexible in treating complex ice processes. In this paper, the formulation of the discrete-parcel method for sea ice dynamics is presented. Comparisons with Eulerian finite-difference methods and the semi-Lagrangian PIC method are given. An application of the model to Bobal Sea is presented.
出处
《海洋预报》
北大核心
1999年第3期71-84,共14页
Marine Forecasts
关键词
冰动力学
离散元方法
海冰模式
海冰
Ice dynamics, Discrete-parcel method, Sea ice model.
