Nonlinear Sciences – Pattern Formation and Solitons
Scientific paper
2002-01-18
Nonlinear Sciences
Pattern Formation and Solitons
27 pages,6 figures
Scientific paper
10.1121/1.1577547
Vocal fold (VF) motion is a fundamental process in voice production, and is also a challenging problem for direct numerical computation because the VF dynamics depend on nonlinear coupling of air flow with the response of elastic channels (VF), which undergo opening and closing, and induce internal flow separation. A traditional modeling approach makes use of steady flow approximation or Bernoulli's law which is known to be invalid during VF opening. We present a new hydrodynamic semi-continuum system for VF motion. The airflow is modeled by a quasi-one dimensional continuum aerodynamic system, and the VF by a classical lumped two mass system. The reduced flow system contains the Bernoulli's law as a special case, and is derivable from the two dimensional compressible Navier-Stokes equations. Since we do not make steady flow approximation, we are able to capture transients and rapid changes of solutions, e.g. the double pressure peaks at opening and closing stages of VF motion consistent with experimental data. We demonstrate numerically that our system is robust, and models in-vivo VF oscillation more physically. It is also much simpler than a full two-dimensional Navier-Stokes system.
LaMar Drew M.
Qi Yingyong
Xin Jack
No associations
LandOfFree
Modeling Vocal Fold Motion with a New Hydrodynamic Semi-Continuum Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modeling Vocal Fold Motion with a New Hydrodynamic Semi-Continuum Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling Vocal Fold Motion with a New Hydrodynamic Semi-Continuum Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-186005