DOI: 10.1615/TSFP3
EXPERIMENTAL INVESTIGATION OF TURBULENT FLOW IN AN IDEALIZED HUMAN AIRWAY IN THE EXTRATHORACIC REGION
要約
The mean and RMS axial velocity field in an idealized representation of the human extrathoracic airway (ETA) during steady inspiration was studied experimentally using hot-wire anemometry and flow visualization techniques. Physiologically correct flow rates in the range of 10, 15, 30, 45, 60, and 90 liters per minute for hot-wire measurements and 30, 60, and 120 liters per minute for flow visualization measurements are considered. These data were then compared to previously obtained Particle Image Velocimety (PIV) data and Reynolds-Averaged Navier-Stokes (RANS) Computational Fluid dynamics (CFD), all of which used an identical ETA model. Flow in the ETA was found to be very complex, with separated, secondary, and recirculating flow regions present at numerous model locations. Comparison of hot-wire, PIV and CFD results are made.