Investigation on the Respiratory Airflow in Human Airway by PIV

초록

The creation of the accurate transparent flow passage is essential to analyze the flow inward a geometrically complex flow passage like human airway by PIV. We established the procedure to create a transparent box containing a model of the, human airway for PIV measurements. A flow passage includes the whole human upper airway, nasal cavities, larynx. trachea, and 2 generations of bronchi. The phase averaged mean and RMS velocity distributions in sagittal and coronal planes are obtained for 7 phases in a respiratory period by tomographic PIV. Some physiologic conjectures are obtained. The main stream went through die backside of larynx and trachea in inspiration and the frontal side in expiration.

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