| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
For the fluid mixing and turbulence transition process, the complexity of time sequence of fluid velocity signal was obtained. It was applied into three flow fields: a mixing layer between jet and surrounding fluid, a boundary layer in which the velocity of the fluid decreased due to the friction, and pipe flow.
In the mixing layer, the complexity was able to show the progress of the mixing and turbulence transition processes quantitatively. In the flat-plate boundary layer and pipe flow an objective judgment based on the complexity mostly supported the subjective conventional criterion. Additionally, with the aid of the complexity we could distinguish the complexity within the turbulent region, but with the conventional way, we could not.
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