使用时间插值的特征线法在光滑粒子法拉氏边界条件中的应用

宫翔飞; 张树道; 杨基明

doi:10.6052/0459-1879-14-412

使用时间插值的特征线法在光滑粒子法拉氏边界条件中的应用

doi: 10.6052/0459-1879-14-412

1.
中国科学技术大学, 合肥230022
2. 北京应用物理与计算数学研究所, 北京100094

基金项目: 中国工程物理研究院科学技术发展基金(2012B0201027,2012B0201028,2012A0201011,2013A0101004,2013A0201009)资助项目.

详细信息

通讯作者:
宫翔飞,副研究员,主要研究方向:水下爆炸,SPH方法及应用.E-mail:gong_xiangfei@iapcm.ac.cn

中图分类号: O368
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- 文章访问数: 907
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- 被引次数: 0
出版历程
- 收稿日期: 2014-12-24
- 修回日期: 2015-07-14
- 刊出日期: 2015-09-18

APPLICATION OF LAGRANGIAN BOUNDARY CONDITIONS BY CHARACTERISTICS METHOD USING TIME-LINE INTERPOLATION IN SPH

1.
University of Science and Technology of China, Hefei 230022, China
2. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

Funds: The project was supported by the CAEP Project (2012B0201027, 2012B0201028, 2012A0201011, 2013A0101004, 2013A0201009).

摘要

摘要: 在计算流体动力学的实际应用中无反射边界条件是一个重要的研究课题. 文中应用时间插值的特征线方法构造了一种新式的拉氏边界条件,并应用在光滑粒子法中. 该方法与使用特征线方法的欧拉边界条件方法相比,不需要区分超声速和亚声速流的不同,并且在入流和出流中具有相同的形式,因而更加简便易行. 数值结果表明,采用时间插值特征线法的拉氏边界条件方法在稀疏波、激波以及爆轰波的模拟中都能够得到较好的无反射效果.
- 时间插值 /
- 特征线法 /
- 无反射边界条件 /
- 拉氏边界条件 /
- 光滑粒子法
Abstract: Boundary conditions is an important research topic in the practical application of computational fluid dynamics. A new Lagrangian boundary conditions framework is constructed by characteristics method using time-line interpolation and is applied in SPH. Compared with methods within Euler framework this method is obvious and easily carrying out for the same formulations in inflow zone and in outflow zone whether for subsonic flow or supersonic flow. SPH numerical simulation in various wave inputs shows the feasibility of the method.
- time-line interpolation /
- method of characteristic /
- non-reflecting boundary conditions /
- Lagrangian boundary conditions /
- SPH

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