| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
Viscous fingering (VF) is a hydrodynamic instability which occurs when a more viscous fluid is displaced by a less viscous one in a porous medium and in a Hele-Shaw cell. Here, we have investigated experimentally VF with chemical reaction producing gel. We focus influence of flow rate and kinds of gel on the dynamics. The fracture patterns are observed for different flow rate when we change the concentration. We try to elucidate their mechanism by Large Amplitude Oscillatory Shear (LAOS) measurement of the reactive miscible interface.Based on analysis of interfacial LAOS measurement, we propose that both yield of gel and a certain magnitude of gel’s elasticity are necessary for the fracture formation.
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