Affiliations: Graduate School of Science and Engineering, Saitama
University, 255 Shimo-Okubo, Sakura-ku, Saitama-shi, Saitama 338-8570, Japan.
E-mail: wonje@hanmail.net | Faculty of Engineering, Saitama University, 255
Shimo-Okubo, Sakura-ku, Saitama-shi, Saitama 338-8570, Japan. E-mail:
{mkawa,hhira}@mech.saitama-u.ac.jp |
Abstract: Mechanical ventilations for artificial respiration have been
developed to improve the medical treatment of the patients showing respiratory
disorder. In various types of ventilation, High Frequency Oscillatory
Ventilation (HFOV) is one of the most effective techniques of medical care for
pulmonary disease patients, especially, infants or premature infants. HFOV is a
ventilation technique with high breathing rate in comparison with the normal
breathing rate. Some successful studies have focused on the effect of treatment
using HFOV. However, the mechanism of gas exchange in bronchial tube under the
medical treatment by HFOV has not been clarified. In this study, the
oscillatory flow in a micro-channel model of bronchial with single bifurcation
in HFOV mode has been investigated experimentally with micro Particle Image
Velocimetry (micro PIV) technique. The phase averaged velocity profiles
changing with the driving frequency of HFOV have been investigated.
