Yield stress of structured fluids measured by squeeze flow

Meeten, G.H.

doi:10.1007/s003970000071

Cited by 79 publications

(59 citation statements)

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“…One used four-bladed vane tools, lowered into a container of material and used as previously described (Meeten 2000). The other used a Bohlin CVO 120 rheometer with serrated parallel plates of 40 mm diameter.…”

Section: Methodsmentioning

confidence: 99%

“…Zwick et al (1996) made constant F measurements and no-slip Herschel-Bulkley analyses of three yield stress fluids. Meeten (2000Meeten ( , 2001 compared the yield stress of several materials measured by SF between smooth glass plates, and by the no-slip vane method. Discrepancies between the two methods suggested some slip in SF but perfect slip was not found.…”

Section: Introductionmentioning

confidence: 99%

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Constant-force squeeze flow of soft solids

Meeten

2002

Rheologica Acta

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Constant-force squeeze flow of soft solids

Meeten

2002

Rheologica Acta

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“…Models with the saturation behavior are excluded as well. Nevertheless, the maximum friction law is reported in the literature on squeezing flow [24]. It is shown in the present paper that the combination of the maximum friction law and a viscoplastic model with a saturation stress can lead to distinguished features of solutions.…”

mentioning

confidence: 86%

Viscoplasticity with a saturation stress: distinguishing features of the model

Alexandrov

Mishuris

2006

Arch Appl Mech

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Alexandrov, S; Mishuris, G. Viscoplasticity with a saturation stress: distinguishing features of the model. Archives of Applied Mechanics. 2007, 77(1), 35-47Viscoplastic models including a saturation stress are considered. The existence of the saturation stress significantly changes the mathematical structure of solutions near maximum friction surfaces (surfaces where the friction stress is equal to the local shear yield stress). The main features of solutions based on such theories are: (a) sliding must occur at the maximum friction surfaces under certain conditions, (b) the velocity field may be singular in the vicinity of maximum friction surfaces. The objective of the present paper is to study these features of solutions. The mathematical structure obtained is considered to be advantageous for a class of materials and may lead to a convergence of viscoplastic solutions to the corresponding rigid perfectly plastic solutions. It seems that the latter is of importance for the construction of a unified theory that could describe the material behavior in the range from rate-independent plasticity to viscoplasticity. In the present paper, the study of the main features of the model is based on the exact closed-form solution to the problem of flow between two coaxial rotating cylinders. In the case of sliding, in addition to the aforementioned features, the asymptotic behavior of the velocity field in the vicinity of the maximum friction surface is found for a class of constitutive laws.Peer reviewe

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“…In the case of the squeeze flow, Adams et al, 32 Sherwood and Durban, 33,34 and Meeten [35][36][37] studied the change in the squeezing force of yield stress fluids in different geometries: between two parallel plates, between a flat surface and concave and convex spherical surfaces. They demonstrated the existence of a yield force that has to be overcome in order for an object to move away from or towards a flat wall.…”

Section: Discussionmentioning

confidence: 98%

Dynamics of particles suspended in a yield stress fluid flowing in a pipe

2008

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This study seeks to understand the basic mechanisms governing the dynamics of a solid particle in a Poiseuille flow field of a viscoplastic fluid. An experimental set‐up to create flows with a prescribed flow rate and enable the particles to be visualized in three dimensions was designed and validated. The absence of slip at the interfaces between flows and particles was characterized. The Reynolds numbers are low, gravity effects negligible and plastic effects significant. The ratio of pipe diameter to particle diameter is 8. The dynamics of a particle in a velocity field depends strongly on its position in the sheared wall zone or in the moving rigid zone. The effect of rigid and sheared zones on particle behavior was examined. Changes in particle translation and rotation velocities were quantified. © 2008 American Institute of Chemical Engineers AIChE J, 2008

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Yield stress of structured fluids measured by squeeze flow

Cited by 79 publications

References 0 publications

Constant-force squeeze flow of soft solids

Constant-force squeeze flow of soft solids

Viscoplasticity with a saturation stress: distinguishing features of the model

Dynamics of particles suspended in a yield stress fluid flowing in a pipe

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