Numerical simulation of inspiratory airway in the nasal cavity of a bactrian camel (Camelus bactrianus).

摘要

To investigate the flow patterns in nasal cavity of bactrian camel (Camelus bactrianus), an anatomically accurate finite volume model of its left nasal cavity from CT scans of a healthy adult nose was constructed. By numerically solving the steady-state Navier-Strokes and continuity equations, the flow distribution and the complete velocity field for inspiration throughout the nasal cavity under physiological flow rates of breathing was studied. During inspiration, the highest velocity occurred along the nasal floor. The pressure droplet between the nostril and pharynx was about 7 pascal at the inspiratory flow rate of 232 ml/s. It was could concluded that the anatomical complexity makes the air cleaned and conditioned sufficiently. This technique may help understanding the physiological functions of the noses in camels.