Flow separation from the vocal fold surface

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F10%3A00347988" target="_blank" >RIV/61388998:_____/10:00347988 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Flow separation from the vocal fold surface
Original language description
The paper presents both experimental and computational quantitative data on the position of the flow separation point during vocal vibration. The experimental results were obtained on a 4:1 scaled physical vocal fold model. Airflow was visualized using aPIV system synchronized with vocal fold vibration. Besides, dynamic subglottal and supraglottal pressure, radiated acoustic pressure and vocal fold vibration were measured by dynamic pressure transducers, measuring microphones and accelerometers. Computational data originate from finite element simulations of airflow past vibrating vocal folds. The airflow was modeled as incompressible and unsteady and driven by transglottal pressure difference using Arbitrary Lagrangian-Eulerian approach. The resultssuggest that the flow separation criterion holds approximately during most of the oscillation cycle when vocal folds are wide apart. Near vocal fold collision, however, the airflow separates further downstream and in an asymmetric way.
Czech name
—
Czech description
—

Project
<a href="/en/project/KJB200760801" target="_blank" >KJB200760801: Mathematical modeling and experimental investigation of fluid-structure interaction in human vocal folds</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)