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Updated: Jun 14, 2026
06:24
Manufacturing Process for Non-Adhesive Super-Soft Vocal Fold Models
Published on: January 5, 2024
Experimental flow study of modeled regular and irregular glottal closure types.
Clemens Kirmse1, Michael Triep, C Brücker
1Institute of Mechanics and Fluid Dynamics, Technische Universität, Bergakademie Freiberg, Lampadiusstr. 4, 09596 Freiberg, Germany. Clemens.Kirmse@imfd.tu-freiberg.de
Logopedics, Phoniatrics, Vocology
|March 31, 2010
Summary
This study visualizes jet formation in a dynamic human vocal fold model. Different glottis shapes impact jet behavior and aero-acoustic sound, offering insights into voice production.
Area of Science:
- Biomedical Engineering
- Fluid Dynamics
- Acoustics
Background:
- Understanding vocal fold dynamics is crucial for diagnosing and treating voice disorders.
- Previous models simplified vocal fold motion, limiting realistic jet formation analysis.
Purpose of the Study:
- To visualize and analyze jet formation from a dynamic vocal fold model.
- To investigate the influence of various glottis shapes on jet behavior and sound production.
Main Methods:
- Developed a dynamic vocal fold model using counter-rotating 3D cams with silicone membranes.
- Engineered cams to simulate clinical vocal fold motions and create distinct glottis closure types (convex, triangular, rectangular, concave).
- Conducted visualization experiments, including irregular static closure cases, to observe jet dynamics.
Main Results:
- Observed distinct jet formation patterns for each glottis shape.
- Irregular static closure cases resulted in oscillating jets attaching to ventricular folds.
- Identified changes in the aero-acoustic sound spectrum, particularly vortex-induced components, due to jet behavior.
Conclusions:
- The study demonstrates the significant impact of glottis geometry on vocal fold jet dynamics.
- Findings suggest a link between jet oscillation, ventricular fold interaction, and voice acoustics.
- The dynamic model provides a valuable tool for further research into voice production and pathology.
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