| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Outline of Final Research Achievements |
Measurement of the carbon dioxide concentration change by intermittent oscillatory flow through a pipe with circumferential grooves at several stop times of the intermittent oscillatory flow has been carried out. The results show that the effective diffusivity is the greatest when the stop time of the intermittent oscillatory flow is the longest.The greater the maximum velocity in the pipe, the greater the effective diffusivity.When the volume of the core region of the pipe was almost same as the volume in the circumferential grooves in the pipe, maximum effective diffusivity was obtained.Furthermore, a respirator which was devised with a new mechanism has been tested and as the ventilation performance was double in comparison with a current commercial article.
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