Numerical Simulation of Fluid–Structure Interaction Problems with Applications to Flow in Vocal Folds - Fluid-Structure Interaction and Biomedical Applications - page 380

Fig. 5.30 Streamlines at time instants t D 29;31 ms

Fig. 5.31 Streamlines at time instants t D 33;34 ms

heat c v D 721:428 m 2 s 2 K 1 , the Poisson adiabatic constant D 1:4. The inlet
Mach number is M in

D 0:012. In the numerical tests, piecewise quadratic elements

(r D 2)areused.
Figures 5.30 , 5.31 ,and 5.32 show the computed streamlines at different time
instants t D 29;31;33;34;36;37;39ms during the fourth period of the motion. In
the solution we can observe a flapping jet in the glottis and large vortex formations
convected through the domain downstream. The flow field is not periodic and not
axisymmetric, although the computational domain is axisymmetric and the motion
of the channel walls is periodic and symmetric as well.