A Coupled Sharp-Interface Immersed Boundary-Finite-Element Method for Flow-Structure Interaction With Application to Human Phonation

Zheng, Xudong; Xue, Qian; Mittal, Rajat; Beilamowicz, Steven

doi:10.1115/1.4002587

Cited by 96 publications

(106 citation statements)

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“…The coupling between the flow and solid solver is implemented by tracking the aerodynamic load on the interface mesh as well as its deformed shape and velocity in a Lagrangian fashion. Details regarding the FSI solver can be found in Zheng et al (2010).…”

Section: Computational Modeling and Simulation Setupmentioning

confidence: 99%

“…In Zheng et al (2010), a 2D VF profile was extracted from a high resolution laryngeal CT scan of a normal male subject and was "extruded" in the third direction to generate a 3D VF model without longitudinal variation. The same VF model is utilized here and is placed into the elliptical vocal tract with the medial surface 0.005 cm away from the glottal midline.…”

Section: Computational Modeling and Simulation Setupmentioning

confidence: 99%

“…Therefore, each layer is assumed to be longitudinally invariant. The constitutive law for the viscoelastic, transversely isotropic material was described in detail in Zheng et al (2010), and here only the material properties for each layer are reported. The tissue density (q), the in-plane transversal Poisson's ratio ( p ), and the longitudinal Poisson's ratio ( pz ) are the same for all three layers, and their values are 1.043 g/cm 3 , 0.9, and 0.0, respectively.…”

Section: Computational Modeling and Simulation Setupmentioning

confidence: 99%

“…Thus, the kinematic "hard-wall" contact model used in the symmetric laryngeal models of past studies (Luo et al, 2008Zheng et al, 2010Zheng et al, , 2011b is no longer suitable and the phenomenological non-linear spring based contact force model described in Sec. II B becomes particularly necessary.…”

Section: Effect Of Vf Tension Asymmetry On Phonationmentioning

confidence: 99%

“…However, the lack of coupling to VF vibrations in these models eliminated the possibility of understanding flow-coupled vibratory dynamics. Very recently, a 3D coupled flow-structure interaction (FSI) model with fully resolved flow and tissue dynamics was developed by Zheng et al (2010Zheng et al ( , 2011b to investigate the dynamics of phonation. The model coupled an accurate immersed-boundary method based flow-solver with a finite element method based solid dynamics solver, and reproduced many of the characteristic features of the glottal flow and VF dynamics observed in vivo and in vitro; the model also provided new insights regarding asymmetric jet deflection and transition.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Computational modeling of phonatory dynamics in a tubular three-dimensional model of the human larynx

Xue

Mittal

Zheng

et al. 2012

The Journal of the Acoustical Society of America

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Simulation of the phonatory flow-structure interaction has been conducted in a three-dimensional, tubular shaped laryngeal model that has been designed with a high level of realism with respect to the human laryngeal anatomy. A non-linear spring-based contact force model is also implemented for the purpose of representing contact in more general conditions, especially those associated with three-dimensional modeling of phonation in the presence of vocal fold pathologies. The model is used to study the effects of a moderate (20%) vocal-fold tension imbalance on the phonatory dynamics. The characteristic features of phonation for normal as well as tension-imbalanced vocal folds, such as glottal waveform, glottal jet evolution, mucosal wave-type vocal-fold motion, modal entrainment, and asymmetric glottal jet deflection have been discussed in detail and compared to established data. It is found that while a moderate level of tension asymmetry does not change the vibratory dynamics significantly, it can potentially lead to measurable deterioration in voice quality.

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Section: Computational Modeling and Simulation Setupmentioning

confidence: 99%

Section: Computational Modeling and Simulation Setupmentioning

confidence: 99%

Section: Computational Modeling and Simulation Setupmentioning

confidence: 99%

Section: Effect Of Vf Tension Asymmetry On Phonationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Computational modeling of phonatory dynamics in a tubular three-dimensional model of the human larynx

Xue

Mittal

Zheng

et al. 2012

The Journal of the Acoustical Society of America

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Computational modeling of vibration‐induced systemic hydration of vocal folds over a range of phonation conditions

Bhattacharya

Siegmund

2014

Numer Methods Biomed Eng

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Predicting phonation conditions that are benign to voice health remains a biomechanically relevant problem. Our objective is to provide insight into vocal fold (VF) hydration based on continuum-based VF models that are able to compute VF stresses during phonation and a scheme for the extraction and generalization of such computational data based on the principle of linear superposition. Because VF tissue is poroelastic, spatial gradients of VF hydrostatic stresses computed for a given phonation condition determine VF interstitial fluid flow. The present approach transforms, based on linear superposition principles, the computed interstitial fluid velocities at the particular phonation to those at an arbitrary phonation condition. Intersititial fluid flow characteristics for a range of phonation conditions are compared. For phonation conditions with no or moderate collision, no dehydration per vibration cycle is predicted throughout the VF. For more severe collision conditions, tissue dehydration is restricted to a region close to the glottal surface. Interstitial fluid displacement in the VF is found to be heterogeneous and strongly dependent on the phonation condition. A phonation condition is found to exist for which dehydration peaks. The proposed method significantly expands the scope and relevance of conducting isolated numerical simulations of VF vibration.

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A numerical strategy for finite element modeling of frictionless asymmetric vocal fold collision

Granados

Misztal

Brunskog

et al. 2016

Numer Methods Biomed Eng

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Document Version Peer reviewed version Link back to DTU Orbit Citation (APA):Granados, A., Misztal, M. K., Brunskog, J., Visseq, V., & Erleben, K. (2016) . SUMMARYAnalysis of voice pathologies may require vocal fold models that include relevant features such as vocal fold asymmetric collision. The present study numerically addresses the problem of frictionless asymmetric collision in a self-sustained three-dimensional continuum model of the vocal folds. Theoretical background and numerical analysis of the finite-element position-based contact model are presented, along with validation. A novel contact detection mechanism capable to detect collision in asymmetric oscillations is developed. The effect of inexact contact constraint enforcement on vocal fold dynamics is examined by different variational methods for inequality constrained minimization problems, namely the Lagrange multiplier method and the penalty method. In contrast to the penalty solution, which is related to classical spring-like contact forces, numerical examples show that the parameter-independent Lagrange multiplier solution is more robust and accurate in the estimation of dynamical and mechanical features at vocal fold contact. Furthermore, special attention is paid to the temporal integration schemes in relation to the contact problem, the results suggesting an advantage of highly diffusive schemes. Finally, vocal fold contact enforcement is shown to affect asymmetric oscillations. The present model may be adapted to existing vocal fold models, which may contribute to a better understanding of the effect of the non-linear contact phenomenon on phonation.

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A Coupled Sharp-Interface Immersed Boundary-Finite-Element Method for Flow-Structure Interaction With Application to Human Phonation

Cited by 96 publications

References 43 publications

Computational modeling of phonatory dynamics in a tubular three-dimensional model of the human larynx

Computational modeling of phonatory dynamics in a tubular three-dimensional model of the human larynx

Computational modeling of vibration‐induced systemic hydration of vocal folds over a range of phonation conditions

A numerical strategy for finite element modeling of frictionless asymmetric vocal fold collision

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