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首页> 外文期刊>Progress in Aerospace Sciences >Immersed boundary methods for simulating fluid-structure interaction
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Immersed boundary methods for simulating fluid-structure interaction

机译：沉浸边界法模拟流固耦合

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摘要

Fluid-structure interaction (FSI) problems commonly encountered in engineering and biological applications involve geometrically complex flexible or rigid bodies undergoing large deformations. Immersed boundary (IB) methods have emerged as a powerful simulation tool for tackling such flows due to their inherent ability to handle arbitrarily complex bodies without the need for expensive and cumbersome dynamic re-meshing strategies. Depending on the approach such methods adopt to satisfy boundary conditions on solid surfaces they can be broadly classified as diffused and sharp interface methods. In this review, we present an overview of the fundamentals of both classes of methods with emphasis on solution algorithms for simulating FSI problems. We summarize and juxtapose different IB approaches for imposing boundary conditions, efficient iterative algorithms for solving the incompressible Navier-Stokes equations in the presence of dynamic immersed boundaries, and strong and loose coupling FSI strategies. We also present recent results from the application of such methods to study a wide range of problems, including vortex-induced vibrations, aquatic swimming, insect flying, human walking and renewable energy. Limitations of such methods and the need for future research to mitigate them are also discussed.
机译：在工程和生物学应用中经常遇到的流固耦合问题涉及几何形状复杂的柔性或刚体，它们经历大的变形。浸入式边界（IB）方法已成为解决此类流的强大仿真工具，这是因为它们固有的处理任意复杂物体的能力，而无需昂贵且麻烦的动态重新网格化策略。根据此类方法为满足固体表面上的边界条件所采用的方法，可以将其大致分为扩散和清晰的界面方法。在这篇综述中，我们概述了这两种方法的基础，重点是用于模拟FSI问题的求解算法。我们总结并并置了用于施加边界条件的不同IB方法，用于在存在动态浸入边界的情况下求解不可压缩的Navier-Stokes方程的有效迭代算法以及强弱耦合FSI策略。我们还介绍了使用这种方法研究各种问题的最新结果，这些问题包括涡激振动，水上游泳，昆虫飞行，人类行走和可再生能源。还讨论了此类方法的局限性以及未来研究减轻这些方法的需求。

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