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OpenIFEM: A High Performance Modular Open-Source Software of the Immersed Finite Element Method for Fluid-Structure

Jie Cheng¹, Feimi Yu¹, Lucy T Zhang¹

¹Department of Mechanical Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA.

Computer Modeling in Engineering & Sciences : CMES

|June 14, 2021

Summary

This summary is machine-generated.

OpenIFEM is a new open-source software for fluid-structure interaction (FSI) problems. This modular C++ package enables coupling of various fluid and solid solvers, enhancing FSI algorithm development and applications.

Keywords:

Immersed finite element method adaptive mesh refinement fluid-structure interaction open-source parallelization

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Area of Science:

Computational Fluid Dynamics
Solid Mechanics
Computational Science

Background:

Existing open-source software for fluid-structure interaction (FSI) often have limitations in discretization methods, modularity, and extensibility.
There is a need for flexible, well-documented, and extensible open-source tools to advance FSI research.

Purpose of the Study:

To introduce OpenIFEM, a high-performance, modular, open-source software for solving fluid-structure interaction (FSI) problems.
To provide a versatile platform for coupling diverse fluid and solid mechanics solvers.
To facilitate the development and application of advanced FSI algorithms.

Main Methods:

Implementation of the modified immersed finite element method (mIFEM) in C++.
Modular software design with generic classes for adaptable coupling of fluid and solid solvers.
Utilization of well-developed libraries and inclusion of standard test cases for validation.

Main Results:

OpenIFEM supports incompressible and slightly compressible fluid models, linear and nonlinear solid mechanics, and fully coupled FSI.
The software is cross-platform (Linux, Windows, Mac OS) and utilizes CMake for building.
Efficient parallelization is implemented for high-performance computing on large-scale problems.

Conclusions:

OpenIFEM offers a robust and extensible solution for FSI simulations.
The software's modularity and adaptability are expected to accelerate the development of new FSI algorithms.
OpenIFEM is publicly available on GitHub, promoting wider adoption and application in various FSI domains.