SUCRA(さくら: Saitama University Cyber Repository of Academic Resources)は、埼玉大学に在籍する研究者の学術雑誌論文、紀要論文、科学研究費補助金成果報告書、学位論文、研究発表プレゼン資料などを登録し、広く世界に発信しています。 埼玉大学に在籍する皆様は、著作物をSUCRAを通じて発信することができます。詳しくは「成果物の登録方法」をご覧ください。
Graduate School of Science and Engineering, Saitama University
Mechanical Science Division, Graduate School of Science and Engineering, Saitama University
Mechanical Science Division, Graduate School of Science and Engineering, Saitama University
Graduate School of Science and Engineering, Saitama University
雑誌名
JOURNAL OF VISUALIZATION
巻
12
号
2
ページ
109 - 118
発行年
2009
年月次
2009
出版者名
IOS PRESS
ISSN
13438875
抄録
As the mechanism of gas transport and exchange in human respiratory ventilation, the complicated processes of mixing and diffusion in airways of human lungs are considered. However the mechanism has not been clarified enough. On the other hand, the analysis of detailed mechanism in the case of artificial ventilation like HFOV (High Frequency Oscillatory Ventilation) is strongly required for the development of clinical treatments on patients with respiration disorder. In HFOV, it is considered that pendelluft becomes one of the important factors of gas transport and exchange because of high frequency ventilation in comparison with natural breathing. As increase of the frequency, the different time constants of lung units generate phase lag of ventilation in airways of lungs. The phase lag of ventilation causes to generate pendelluft. The time constant is determined by compliance and flow resistance of lung unit. In order to investigate the effect of the different time constants induced by the difference of flow resistance in a part of respiratory bronchiole of human lungs, the experimental study has been carried out by using multi-bifurcated micro channels as a model of bronchiole. The flow resistance in the model channels was produced by a stenosis. The velocity distributions of ventilation flows in the channels with and without the stenosis have been measured by using mu-PIV technique. The results obtained show the frequency effects on the flow pattern in the bronchiole model channels and the appearance of pendelluft.
Experimental Analysis of Oscillatory Airflow in a Bronchiole Model with Stenosis
A1002896.pdf
(568.12KB)
SUCRAの概要
