适用于刚性边界的浸入边界算法研究现状.doc

文档介绍：
适用于刚性边界的浸入边界算法研究现状#
杨青,曹曙阳**
(同济大学土木工程防灾国家重点实验室,上海 200092)
5
10
15
20
25
30
35
40
摘要:浸入边界法经过几十年的发展,在实际工程的应用中不断改进形成了一个庞大的算法
体系。但前期的浸入边界法多集中弹性边界问题的研究,对适用于刚性边界的浸入边界算法
则只简略提及,然而后者已成为浸入边界算法体系中最具有应用前景的一环,本文即通过详
细介绍适用于刚性边界的浸入边界算法并提出该算法未来应用发展和完善的方向旨在促进
该算法应用于更广阔的结构工程绕流数值模拟。
关键词:刚性边界;浸入边界算法;算法体系
中图分类号:O368
Development of immersed boundary algorithm for rigid
boundary
YANG Qing, CAO Shuyang
(State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai
200092)
Abstract: The immersed boundary method is developed by modification and application to
algorithm system during several decades. But previous immersed boundary method is mainly
focused on the elastic boundary research. Few introduction of immersed boundary method for
rigid boundary is illustrated. However the latter method es the most promising aspect of
engineering application. In this paper, immersed boundary method for rigid boundary is illustrated
in detail. And then the future development and modification of this algorithm is proposed to
promote the algorithm to broad application of numerical simulation for flow around structure.
Key words: Rigid boundary; Immersed boundary method; Algorithm system
0 引言
物体绕流是工程领域中遇到的普遍问题,例如:桥梁建筑的空气绕流,水利输水设施的
绕流以及航空航天器的机翼绕流。研究具体的工程绕流问题可以有效地分析其动力性能,改
进工程设计,提高和改善工程的可靠安全性。
随着计算机技术突飞猛进的发展,工程学界越来越倾向于利用计算数值模拟去研究流体
动力学问题。然而对实际绕流问题展