您的位置:首页  > 论文页面

不同重度流体自由塌落的数值模拟——基于颗粒运动的Lagrange描述方法

发表时间:2010-08-15  浏览量:1177  下载量:579
全部作者: 王思朝
作者单位: 河海大学疏浚技术教育部工程研究中心
摘 要: 应用一种数值模拟方法——移动粒子半隐式(moving particle semi-implicit,MPS)方法,基于颗粒运动的Lagrange描述,将着眼点回归到研究流体运动的基本单元——质点上,追踪质点运动学和动力学性质的变化过程及各个质点的运动变化规律,从而获得整个流场的流动信息,包括相应的位置、质量、动量及能量等信息。各质点之间通过核子函数相互作用,建立物理量光滑模型、梯度模型和扩散模型实现控制方程的离散。针对不同重度流体之间的相互作用进行模型设计及模拟计算,较好地实现了对2种重度流体塌落过程的数值模拟。
关 键 词: 流体力学;自由塌落;MPS法;数值模拟
Title: The numerical simulation of different fluid collapse: based on the Lagrange description of particle motion
Author: WANG Sizhao
Organization: Dredging Technology and Engineering Research Center of Ministry of Edu cation, Hohai University
Abstract: In this paper a numerical simulation method, moving particle semi-implicit (MPS) method, is applied. Based on the Lagrange description of particle motion, it introduces interactions between different fluids and makes the model design and simulation computing. The numerical simulation does a better implementation with the collapsed process and focuses on the study of fluid movement returning to the basic unit: a particle. The kinematics and dynamics of particle in the course of natural transformation, the various changes of particle movement are tracked and thus the information of the entire flow field is acquired, including the location, mass, momentum and energy information. Through interactions between the nuclear functions of particles, the physical model, the gradient model and the diffusion model are established to discrete the control equations.
Key words: fluid mechanics; free collapse; moving particle semi�implicit method; numerical simulation
发表期数: 2010年8月第15期
引用格式: 王思朝. 不同重度流体自由塌落的数值模拟——基于颗粒运动的Lagrange描述方法[J]. 中国科技论文在线精品论文,2010,3(15):1618-1624.
 
0 评论数 0
暂无评论
友情链接