Ring-shaped structure in free surface flow of non-Newtonian liquids
DSpace at IIT Bombay
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Title |
Ring-shaped structure in free surface flow of non-Newtonian liquids
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Creator |
PARMAR, NH
TIRUMKUDULU, MS |
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Subject |
non-newtonian fluids
rotational flow shear flow |
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Description |
We report the formation of a ringlike structure in the flow of particular non-Newtonian liquids coating a rotating vertical disk. Experiments were performed with a known volume of the liquid and at varying rotation rates such that the inertial effects were negligible. The liquid injected on the rotating disk initially coats the surface uniformly, which then redistributes itself such that at steady state a significant amount collected into a circular ring, off center with the axis of rotation. Beyond a critical rotation speed and for a given liquid volume, the ring formation did not occur. The ring formation was not observed in the case of Newtonian liquids. Rheological measurements along with the shear rate calculations suggest that the shear thinning nature of the liquids could be responsible for the observed ring formation.
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Publisher |
AMER PHYSICAL SOC
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Date |
2011-07-16T23:37:06Z
2011-12-26T12:50:00Z 2011-12-27T05:35:55Z 2011-07-16T23:37:06Z 2011-12-26T12:50:00Z 2011-12-27T05:35:55Z 2009 |
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Type |
Article
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Identifier |
PHYSICAL REVIEW E, 80(3), -
1539-3755 http://dx.doi.org/10.1103/PhysRevE.80.036303 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4561 http://hdl.handle.net/10054/4561 |
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Language |
en
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