Project/Area Number |
24560185
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Fluid engineering
|
Research Institution | Osaka University (2014) Institute of Physical and Chemical Research (2012-2013) |
Principal Investigator |
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
|
Keywords | 数値流体力学 / 気液二相流 / 流体工学 / シミュレーション工学 |
Outline of Final Research Achievements |
Numerical methods for simulating an interface deformation and a bubble formation in a gas-liquid micro flow system has been equipped. In consideration of the liquid inertia, the basic equations, we employed, consist of the Laplace law and the two-dimensional Euler-Darcy equation under the assumption of Hele-Shaw's flow owing to a large width-to-thickness aspect ratio of the microchannel. The equations are numerically solved by means of a boundary element method, and the temporal change in the profile of the gas-liquid interface is captured. The simulated results in a T-shaped microchannel, which consists of two inlets for gas and liquid and a outlet for gas-liquid mixture, well reproduce the experimentally observed behaviors that the interface pinches off at the channel junction and then a bubble forms, and imply the relevance of the liquid inertia to the bubble formation.
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