Investigation on the respiratory airflow in human airway by PIV
- 207 Downloads
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.
KeywordsTomographic PIV Biomedical flow Human airway CT Physical Model
Unable to display preview. Download preview PDF.
- Doorly, D.J., Franke, V., Gambarruto, A., Taylor, D.J., Schroter, R.C. (2006) Nasal airflow: computational and experimental modeling, 5th World congress of Biomechanics, Munich, S270Google Scholar
- Kim, S.K., (2001) An Experimental Study of Developing and Fully Developed Flows in a Wavy Channel by PIV, KSME international journal, Vol. 15, No. 12, 1853–1859Google Scholar
- Kim, S.K., Son, Y.R., (2002) Particle Image Velocimetry Measurements in Nasal Airflow, Trans. KSME B, Vol. 26, No. 6, 566–569.Google Scholar
- Kim, S.K., Huh, J.R., (2004) An Investigation on Airflow in Abnormal Nasal Cavity by PIV, Journal of Visualization, Vol. 6 No. 4, 274–281Google Scholar
- Kim, S.K., Chung, S.K., (2006): An investigation on oscillatory airflow in human airway during nose breathing by tomographic PIV, Proc. 5th World congress of Biomechanics, Munich, Journal of Biomechanics Vol.39, S271Google Scholar
- Kleven, M., Melaaen, M.C., Reimers, M., Djupesland, P.G. (2006): Computational Modeling of nasal aerodynamics, 5th World congress of Biomechanics, Munich, S271Google Scholar
- Scherer, P.,W., Hahn, I.I., Mozell ,M.M. 1989, “The Biophysics of Nasal Airflow”, Otol. Clinics N. Ame. Vol. 22, No. 2, April, 265-278Google Scholar
- Taylor, D.J., Dooley, D.J., Schroter, R.C., (2006) Airflow in the human nasal cavity, 5th World congress of Biomechanics, Munich, S272Google Scholar