2011 Fiscal Year Final Research Report
Rheology of Dilatant Fluid
| Project/Area Number |
21540418
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Biophysics/Chemical physics
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | ダイラタント流体 / レオロジー / ずり粘化振動 |
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| Research Abstract |
Dense colloids or mixtures of granule-fluid often show a severe shear thickening, which is a cause of well-known strange behaviors shown by a starch-water mixture. We have constructed a phenomenological model of fluid dynamics for such a shear-thickening fluid. By analyzing the model equations, we have shown theoretically that the steady shear flow can be unstable to become an oscillatory flow, and demonstrated experimentally that such a oscillatory flow actually occurs.
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