Zheng X, Xue Q, Mittal R, Beilamowicz S
Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
J Biomech Eng. 2010 Nov;132(11):111003. doi: 10.1115/1.4002587.
A new flow-structure interaction method is presented, which couples a sharp-interface immersed boundary method flow solver with a finite-element method based solid dynamics solver. The coupled method provides robust and high-fidelity solution for complex flow-structure interaction (FSI) problems such as those involving three-dimensional flow and viscoelastic solids. The FSI solver is used to simulate flow-induced vibrations of the vocal folds during phonation. Both two- and three-dimensional models have been examined and qualitative, as well as quantitative comparisons, have been made with established results in order to validate the solver. The solver is used to study the onset of phonation in a two-dimensional laryngeal model and the dynamics of the glottal jet in a three-dimensional model and results from these studies are also presented.
提出了一种新的流固耦合相互作用方法,该方法将基于尖锐界面浸入边界法的流动求解器与基于有限元法的固体动力学求解器相结合。该耦合方法为复杂的流固耦合(FSI)问题提供了稳健且高保真的解决方案,例如涉及三维流动和粘弹性固体的问题。FSI求解器用于模拟发声过程中声带的流致振动。研究了二维和三维模型,并与已有的结果进行了定性和定量比较,以验证该求解器。该求解器用于研究二维喉部模型中的发声起始以及三维模型中声门射流的动力学,还给出了这些研究的结果。