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首页> 外文期刊>Journal of Computational Physics >An immersed-boundary method for flow-structure interaction in biological systems with application to phonation
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An immersed-boundary method for flow-structure interaction in biological systems with application to phonation

机译：一种沉浸边界方法在生物系统中流固耦合作用及其在发声中的应用

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A new numerical approach for modeling a class of flow-structure interaction problems typically encountered in biological systems is presented. In this approach, a previously developed, sharp-interface, immersed-boundary method for incompressible flows is used to model the fluid flow and a new, sharp-interface Cartesian grid, immersed-boundary method is devised to solve the equations of linear viscoelasticity that governs the solid. The two solvers are Coupled to model flow-structure interaction. This coupled solver has the advantage of simple grid generation and efficient computation on simple, single-block structured grids. The accuracy of the solid-mechanics solver is examined by applying it to a canonical problem. The solution methodology is then applied to the problem of laryngeal aerodynamics and vocal fold vibration during human phonation. This includes a three-dimensional eigen analysis for a multi-layered vocal fold prototype as well as two-dimensional, flow-induced vocal fold vibration in a modeled larynx, Several salient features of the aerodynamics as well as vocal fold dynamics are presented. (C) 2008 Elsevier Inc. All rights reserved.
机译：提出了一种新的数值方法，用于建模生物系统中通常遇到的一类流固耦合问题。在这种方法中，使用以前开发的不可压缩流的尖锐界面浸入边界方法对流体流动进行建模，并设计了一种新的尖锐界面笛卡尔网格浸入边界方法来求解线性粘弹性方程，控制固体。将两个求解器耦合以模拟流固耦合。这种耦合求解器具有生成简单网格和在简单的单块结构化网格上高效计算的优势。通过将固体力学求解器应用于典型问题来检查其准确性。然后将该解决方案方法应用于人类发声期间的喉部空气动力学和声带振动问题。这包括对多层声带原型的三维特征分析，以及在建模的喉部中二维流动引起的声带振动。还介绍了空气动力学以及声带动力学的几个显着特征。 （C）2008 Elsevier Inc.保留所有权利。

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