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Subject-Specific Computational Fluid-Structure Interaction Modeling of Rabbit Vocal Fold Vibration.

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  • 1Department of Mechanical Engineering, Vanderbilt University, 2301 Vanderbilt Place, Nashville, TN 37235, USA.

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Summary
This summary is machine-generated.

This study used 3D fluid-structure interaction (FSI) to model rabbit vocal fold vibration, finding good agreement with a 1D machine learning model. Rabbit larynges effectively model human phonation for studying vocal fold disorders.

Keywords:
3D modelbiomechanicsfluid-structure interactionphonationsubject-specific modelvocal fold vibration

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Area of Science:

  • Biomechanics
  • Computational Fluid Dynamics
  • Acoustic Science

Background:

  • Understanding vocal fold vibration is crucial for phonation.
  • Subject-specific modeling requires accurate simulation of fluid-structure interaction (FSI).
  • Rabbit larynges offer a viable model for human phonation studies.

Purpose of the Study:

  • To perform a 3D FSI study of subject-specific vocal fold vibration in rabbit larynges.
  • To analyze vocal fold vibration characteristics and the 3D flow field.
  • To compare 3D FSI results with a 1D machine learning-based glottal flow model.

Main Methods:

  • Utilized a strongly coupled 3D FSI model combining finite-element analysis for vocal fold tissue and Navier-Stokes equations for airflow.
  • Reconstructed five subject-specific rabbit laryngeal models from MRI scans post-phonation.
  • Incorporated individual material properties and experimental inlet pressures for each sample.

Main Results:

  • 3D FSI simulations showed good agreement with the 1D flow model for vibration and intraglottal pressure.
  • Inferior and supraglottal geometries significantly influence the FSI process.
  • Flow patterns exhibited similarities to human vocal fold flow.

Conclusions:

  • Rabbit larynges serve as effective models for understanding human phonation.
  • The 3D FSI approach provides valuable insights into vocal fold dynamics.
  • This research aids future computational studies on vocal fold disorders.