6533b7d3fe1ef96bd1260be3

RESEARCH PRODUCT

Numerical simulation of glottal flow

Markus HessR. LehmannF. MüllerAnna Hundertmark-zaušková

subject

MaleLarynxComputer simulationRespirationSpeech recognitionAcousticsAirflowHealth InformaticsVocal Cordsrespiratory systemModels BiologicalComputer Science ApplicationsGlottal flowBreathing patternmedicine.anatomical_structureVocal Cord DysfunctionVocal foldsotorhinolaryngologic diseasesmedicineBreathingHumansVoiceFemaleMathematics

description

In cases of permanent immobility of both vocal folds patients have difficulties with breathing but rarely with voicing. However, clinical experience shows that the shape of the larynx (voice box) seems to have a significant influence on the degree of airflow and breathing pattern. In order to find an optimal geometry of the larynx in terms of easiness for breathing after the surgical change of vocal folds or false vocal cords (ventricular folds), a set of numerical simulations of glottal flow for weakly compressible Navier-Stokes equations has been performed. We compare airflow resistance and volumetric flow rate for several geometry concepts for inspiration as well as expiration. Finally, we discuss the optimal geometry with respect to the quality of breathing.

https://doi.org/10.1016/j.compbiomed.2013.09.009