通过调整速度重建来提高沉浸式接口方法的稳定性.
Qi Sun1, Ebrahim M Kolahdouz1, Boyce E Griffith1,2,3,4,5,6
1Department of Mathematics, University of North Carolina, Chapel Hill, NC, USA.
概括
一个新的稳定策略增强了流体结构相互作用 (FSI) 算法,允许流体和结构之间更灵活的网状比率. 这提高了计算效率,并扩大了FSI模拟对复杂工程问题的适用性.
科学领域:
- 计算力学是计算力学.
- 流体结构相互作用 (FSI) 建模
背景情况:
- 开发强大而高效的流体结构相互作用 (FSI) 算法对于精确的计算力学至关重要.
- 现有的沉浸式接口方法 (IIM) 面临着限制性网格因子比率的局限性,增加复杂几何形状的计算成本.
研究的目的:
- 为IIM中的速度插值操作员设计稳定策略,以克服网格比限制.
- 提高FSI模拟对复杂几何形状和动态条件的应用性和效率.
主要方法:
- 引入了一种基于提霍诺夫规范化的速度插值运算符的稳定策略.
- 使用固定接口和FSI模型 (刚性体动力学,弹性动力结构) 的基准问题来评估有效性.
主要成果:
- 稳定速度插值运算符使结构与流体网格大小比率的范围更广.
- 精度和流动动力学不受宽松的网格比限制的影响.
- 该方法成功地模拟了复杂的3D几何形状和各种工程应用.
结论:
- 稳定的IIM为具有复杂几何形状和动态条件的FSI问题提供了强大而实用的解决方案.
- 这一进步显著扩大了IIM在计算力学中的适用性.
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