Data Exchange Method for Fluid-Structure Interaction Based on Energy Conservation and Interpolation Algorithm Adopting Radial Basis Function

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Data Exchange Method for Fluid-Structure Interaction Based on Energy Conservation and Interpolation Algorithm Adopting Radial Basis Function

更新时间：2025-07-09

- Data Exchange Method for Fluid-Structure Interaction Based on Energy Conservation and Interpolation Algorithm Adopting Radial Basis Function
- Vol. 43, Issue 9, Pages: 114-119(2009)
- 作者机构：
  
  1. 同济大学土木工程学院,上海,200092
  2. 江苏大学理学院,江苏,镇江,212013
- 作者简介：
- 基金信息：
- DOI：
  CLC： O242.2;TU311.3
- Online First：10 September 2009，
  
  Published：2009
- 稿件说明：
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Data Exchange Method for Fluid-Structure Interaction Based on Energy Conservation and Interpolation Algorithm Adopting Radial Basis Function[J]. 2009, 43(9): 114-119.
DOI：

Data Exchange Method for Fluid-Structure Interaction Based on Energy Conservation and Interpolation Algorithm Adopting Radial Basis Function[J]. 2009, 43(9): 114-119. DOI：

摘要

根据界面能量守恒原理

将径向基函数(RBF)引入流固耦合分析领域

提出了基于RBF插值的流固耦合界面数据传递方法(RBF/FSI).推导了界面位移传递矩阵

并根据RBF/FSI算法编制了相应的界面信息传递的计算程序.以三维耦合界面的位移信息传递为例

将数值计算结果和解析解进行了对比分析

结果表明

RBF/FSI算法计算效率高

计算结果准确

适合处理复杂耦合界面的流固耦合信息传递.此外

RBF/FSI算法允许CSD(计算结构力学)、CFD(计算流体力学)采用任意网格形式

因此在CSD和CFD计算程序之间可以开发独立的界面信息传递接口程序

很容易实现弱耦合分析.

Abstract

Following the principle of energy conservation

a method adopting radial basis function(RBF)is proposed to perform fluid-structure interaction(FSI)analysis. The displacement transfer matrix H is deduced and a corresponding program by RBF/FSI algorithm is developed. Taking displacement data exchange with 3D interface as an example

the numerical solution by RBF/FSI method is compared with the analytical one. The result shows that RBF/FSI method is efficient and accurate

and is suitable for FSI data exchange on complicated interface. Moreover

the method allows CSD(Computational Structural Dynamics)and CFD(Computational Fluid Dynamics)to choose arbitrary grid form to easily realize loose coupling method by developing an independent interface program between CSD and CFD solvers.

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references

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吴宗敏.径向基函数、散乱数据拟合与无网格偏微分方程数值解[J]. 工程数学学报, 2002, 19(2): 1-12.

WU Zongmin. Radial basis function scattered data interpolation and the meshless method of numerical solution of PDEs [J]. Journal of Engineering Mathematics, 2002, 19(2): 1-12.

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FARHAT C, LESOINNEA M, LETALLECB P. Load and motion transfer algorithms for fluid/structure interaction problems with non-matching discrete interfaces: momentum and energy conservation, optimal discretization and application to aeroelasticity [J]. Comput Methods Appl Mech Engrg, 1998, 157(2): 95-114.

JAIMAN R K, JIAO X, GEUBELLE P H, et al. Conservative load transfer along curved fluid-solid interface with non-matching meshes [J]. Journal of Computational Physics, 2006, 218(1): 372-397.

吴宗敏.散乱数据拟合的模型、方法和理论[M]. 北京:科学出版社, 2007.

CEBRAL J R. Loose coupling algorithms for fluid-structure interaction [D]. Fairfax, USA: George Mason University, 1991.

苏波.流固耦合界面信息传递理论方法研究[D].上海:同济大学土木工程学院, 2009.

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