| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2012: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Outline of Final Research Achievements |
Flow visualization and PIV measurements; measurements of viscoelastic fluid properties, pressure loss, and average and local heat transfer characteristics; and three-dimensional numerical simulation were performed in the present study for viscoelastic fluid flow in serpentine micro and milli-meter channels. The unsteady and three-dimensional characteristics of flow and heat transfer were clearly explained. The unsteady flow was not the one reported in other references so-called “viscoelastic turbulence” but unsteady laminar flow. Secondary flows were produced by the normal stress differences near the walls and the flow instability was enhanced by the inflection point of the channel. The fluid mixing and heat transfer performance enhanced markedly compared with the Newtonian fluid case under low Reynolds number conditions. It was also shown that pressure and heat transfer characteristics could be correlated by non-dimensional values even when applying fluids with different properties.
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