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Viscous fingering in non-Newtonian fluids
Journal of Fluid Mechanics, 2002We study the viscous fingering or Saffman–Taylor instability in two different dilute or semi-dilute polymer solutions. The different solutions exhibit only one non-Newtonian property, in the sense that other non-Newtonian effects can be neglected. The viscosity of solutions of stiff polymers has a strong shear rate dependence.
Lindner, Anke +4 more
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Entrance Flows of Non-Newtonian Fluids
Transactions of the Society of Rheology, 1973The creeping flow of a Powell-Eyring fluid through a sudden tubular contraction is considered, and finite difference solutions of the vorticity transport and stream function equations are obtained for a range of contraction ratios, fluid properties, and apparent shear rates.
Duda, J. L., Vrentas, J. S.
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2016
How could you characterize a liquid? You could start with its color, maybe talk about its smell or taste (watch out!) and consider its acidity (lime juice or soap). But sooner or later you will think about the liquid’s viscosity. The viscosity quantifies what we use to call a “thick” or “thin” liquid.
Benjamin Bahr +2 more
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How could you characterize a liquid? You could start with its color, maybe talk about its smell or taste (watch out!) and consider its acidity (lime juice or soap). But sooner or later you will think about the liquid’s viscosity. The viscosity quantifies what we use to call a “thick” or “thin” liquid.
Benjamin Bahr +2 more
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1997
Abstract A new branch of fluid mechanics,Rheology, has rapidly been developed. It deals with non-Newtonian fluids which behave anomalously in comparison with Newtonian fluids. The anomaly is the variation in viscosity with the applied stress while the viscosity is constant for all Newtonian fluids.
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Abstract A new branch of fluid mechanics,Rheology, has rapidly been developed. It deals with non-Newtonian fluids which behave anomalously in comparison with Newtonian fluids. The anomaly is the variation in viscosity with the applied stress while the viscosity is constant for all Newtonian fluids.
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A boundary-layer in a non-newtonian fluid
Zeitschrift für angewandte Mathematik und Physik ZAMP, 1961Dans ce memoire, on examine l'effet d'une variation de viscosite avec la vitesse de deformation dans une couche limite a deux dimensions. Pour des raisons mathematiques traitables, l'exemple que l'on etudie en detail est celui dans lequel le coefficient de viscosite est une fonction lineaire de la vitesse de deformation et la velocite du courant ...
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2010
A fluid can be defined as a material that deforms continually under the application of an external force. In other words, a fluid can flow and has no rigid three-dimensional structure. An ideal fluid may be defined as one in which there is no friction.
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A fluid can be defined as a material that deforms continually under the application of an external force. In other words, a fluid can flow and has no rigid three-dimensional structure. An ideal fluid may be defined as one in which there is no friction.
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Simple Non-Newtonian Fluid Flows
1980Publisher Summary This chapter focuses on simple non-Newtonian fluid flows. Water and air, the most important fluids for life, are Newtonian fluids. However, there are many fluid materials of importance in nature and technology that are non-Newtonian fluids. Certain aspects of the flow behavior of such non-Newtonian fluids are markedly different from
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Magnetoplastic effect in non-Newtonian fluids.
AIAA Journal, 1966For thin shells, y can be approximated by unity, and Eq. (2a) adopts the identity of Eq. (1). Figure 1 shows the shell response history computed from Eq. (2) for three different loading rates for the unstable mode (m = 1, n = 30, Ref. 1). Comparison of these curves shows that, with fixed shell geometry, material, and load magnitude, the higher rate ...
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Stability of non-newtonian fluid flows
Journal of Applied Mechanics and Technical Physics, 2000The stability of non-Newtonian fluid films moving on inclined planes is studied within the two-parameter Ostwald-de Waele model with account taken of the surface tension and van der Waals forces. The problem is solved analytically in the linear formulation, and the evolution of finite-amplitude perturbations is determined numerically.
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