Coating flow of viscous Newtonian liquids on a rotating vertical disk
We study a Newtonian viscous liquid coating a vertical rotating disk in the creeping flow regime. Experiments were performed at varying disk rotation speeds and liquid volumes, and the thickness profi...
We study a Newtonian viscous liquid coating a vertical rotating disk in the creeping flow regime. Experiments were performed at varying disk rotation speeds and liquid volumes, and the thickness profi...
Lattice Boltzmann simulation of the rise and dissolution of two-dimensional immiscible droplets
We used a coupled multiphase lattice Boltzmann (LB) model to simulate the dissolution of immiscible liquid droplets in another liquid during the rising process resulting from buoyancy. It was found th...
We used a coupled multiphase lattice Boltzmann (LB) model to simulate the dissolution of immiscible liquid droplets in another liquid during the rising process resulting from buoyancy. It was found th...
Thermal convection of a viscoplastic liquid with high Rayleigh and Bingham numbers
Phys. Fluids 21, 103103 (2009); doi:10.1063/1.3256166
Published 28 October 2009
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We consider the effect of yield stress on the Rayleigh–Bénard convection of a viscoplastic material. First we consider the model problem of convection in a differentially heated loop, which is described by the (modified) Lorenz equations. The presence of the yield stress significantly alters the dynamics of the system. In particular, the chaotic motion can stop suddenly (sometimes, after a period of chaotic oscillations). Guided by the model equations we performed direct numerical simulations of convection of the Bingham liquid in a square cavity heated from bellow. Our interest has been concentrated on the situation when both buoyancy and plastic forces are large. The obtained results are in a reasonable agreement with the predictions by the Lorenz equations.
©2009 American Institute of Physics
| History: | Received 28 May 2009; accepted 7 October 2009; published 28 October 2009 |
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http://link.aip.org/link/?PHFLE6/21/103103/1 |
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1070-6631 (print)
1089-7666 (online)
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REFERENCES (17)
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