| Budget Amount *help |
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
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| Outline of Final Research Achievements |
For the efficient utilization of thermal energy, small scale thermal systems such as a micro channel heat exchanger have been focused recently. A flow visualization is useful for researches on the micro-scale fluidics. We developed a high-power pulsed LED system with commercial LEDs which can be applied to the micro scale flow visualization without unexpected thermal effects on a flow field.
We developed a T-shaped micromixer by using two Peltier modules. Vertical temperature (viscosity) gradients might be formed by Peltier modules. The flow stratification was generated in the junction resulting in a strong spiral mixing flow in the downstream.
A velocity change had occurred instantly after the Peltier modules were turned on or off. It was conceivably caused by an electroosmotic flow due to the Peltier modules. These phenomena, the stratified and spiral flow in a micromixer and the sudden velocity change due to the electroosmotic flow, were firstly found in this study.
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