Investigation on the Respiratory Airflow in Human Airway by PIV

Authors:
S. K. Kim;S. K. Chung
Affiliations:
Department of Mechanical Engineering, Konkuk University, #1 Hwayang-dong, Kwangjin-ku, Seoul, 143-701, Korea. e-mail: sungkim@konkuk.ac.kr;Department of Otorhinolaryngology-Head & Neck Surgery, Sungkyunkwan University, School of Medicine, Samsung Medical Center, Seoul, Korea. e-mail: rhinochung@skku.edu
Venue:
Journal of Visualization
Year:
2009

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Abstract

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 the backside of larynx and trachea in inspiration and the frontal side in expiration.