期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 227, 期 22, 页码 9303-9332出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2008.05.001
关键词
Immersed-boundary method; Elasticity; Flow-structure interaction; Bio-flow mechanics; Phonation; Laryngeal flow; Flow-induced vibration
资金
- NIDCD [R01 DC007125-01A1]
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.
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