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Related Experiment Video

Updated: Jul 18, 2026

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Published on: February 3, 2014

Modeling coupled aerodynamics and vocal fold dynamics using immersed boundary methods.

Comer Duncan¹, Guangnian Zhai, Ronald Scherer

¹Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403, USA. comer.duncan@gmail.com

The Journal of the Acoustical Society of America

|December 2, 2006

Summary

The penalty immersed boundary (PIB) method models vocal fold and airflow interactions during phonation. This fluid-structure interaction model shows potential for studying how aerodynamics and vocal fold motion influence voice production.

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Area of Science:

Biomedical Engineering
Fluid Dynamics
Acoustics

Background:

Phonation involves complex fluid-structure interactions between vocal fold dynamics and airflow.
Accurate modeling is crucial for understanding voice production and related disorders.

Purpose of the Study:

To evaluate the penalty immersed boundary (PIB) method as a tool for simulating vocal fold phonation.
To investigate the coupled dynamics of vocal folds and airflow using a 2D simulation.

Main Methods:

Simulated two-dimensional vocal folds with properties enabling self-oscillation.
Employed the penalty immersed boundary (PIB) method to model fluid-structure interaction.
Analyzed glottal flow field properties, including vorticity, alongside vocal fold motion.

Main Results:

The PIB method successfully modeled self-oscillating vocal folds across various transglottal pressures (2-12 cm H2O).
Characterized volume flow, transglottal pressure, and vortex dynamics during self-oscillation.
Demonstrated the model's robustness and ability to capture physiological frequency ranges.

Conclusions:

The penalty immersed boundary (PIB) method is a promising approach for studying phonation.
This model facilitates research into the interdependence of aerodynamics and vocal fold motion.
Potential applications include understanding voice disorders and improving voice synthesis.