Related Experiment Video
Updated: Sep 25, 2025
10:16
Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
Published on: December 2, 2011
14.1K
Subject-Specific Computational Fluid-Structure Interaction Modeling of Rabbit Vocal Fold Vibration
Amit Avhad1, Zheng Li1, Azure Wilson2
1Department of Mechanical Engineering, Vanderbilt University, 2301 Vanderbilt Place, Nashville, TN 37235, USA.
Fluids (Basel, Switzerland)
|April 28, 2022
Summary
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.
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.
Related Concept Videos
01:09Turbulent Flow: Problem Solving
196
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
196
01:28Standing Waves in a Cavity
1.1K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.1K
01:24Turbulent Flow
304
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
304
01:30Typical Model Studies
449
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
449