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Journal ArticleDOI

Non-newtonian fluids.

Andreas Acrivos
- 05 Mar 1976 - 
- Vol. 191, Iss: 4230, pp 942-942
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TLDR
The Viscosity can be imagined as the force that should be applied to a layer of fluid belonging to the plane fixed to the velocity of the layer placed at a fixed distance.
Abstract
The Viscosity can be imagined as the force that should be applied to a layer of fluid belonging to the plane fixed to the velocity of the layer placed at a fixed distance. For example a fluid flowing in a tube at different speeds: the minimum speed is in the edge of the section (due to friction) and the maximum speed is at the center. The viscosity in this example is that pressure which is exerted on the wall allows a constant speed on the whole section.

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Citations
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Journal ArticleDOI

Applications of electro-rheological fluids in vibration control: a survey

TL;DR: A comprehensive survey of electro-rheological (ER) fluids for vibration control can be found in this paper, where the key modes of operation are identified and progress towards a unified approach to visualizing the macroscopic behaviour is summarized.
Book

The Vitreous State: Thermodynamics, Structure, Rheology, and Crystallization

TL;DR: In this article, the authors describe a general approach to the description of the structure of glasses and the statistical physics of under-cooled Melts and Glasses, as well as the theory of crystal growth and dissolution in under- cooled Melts.
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Pressure drop and heat transfer study in tube-in-tube helical heat exchanger

TL;DR: In this paper, the authors investigated the hydrodynamics and heat transfer characteristics of tube-in-tube helical heat exchanger at the pilot plant scale, where the inner and outer tubes were fitted with semicircular plates to support the inner tube and provide high turbulence in the annulus region.
Journal ArticleDOI

Steady flow of an Eyring Powell fluid over a moving surface with convective boundary conditions

TL;DR: In this paper, the effects of emerging fluid parameters (ϵ, (δ) and Prandtl number (Pr) on the velocity and temperature are illustrated through graphs and tables for different values of λ.
Journal ArticleDOI

Rheological properties of amorphous and semicrystalline polylactic acid polymers

TL;DR: In this article, the viscosities of two types of PLA resins (amorphous and semicrystalline) at 150 and 170°C and at various shear rates (30, 50, 70, 90, 110, 130, and 150 rpm screw speeds) were measured with a tube rheometer on an extruder.
References
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Journal ArticleDOI

Applications of electro-rheological fluids in vibration control: a survey

TL;DR: A comprehensive survey of electro-rheological (ER) fluids for vibration control can be found in this paper, where the key modes of operation are identified and progress towards a unified approach to visualizing the macroscopic behaviour is summarized.
Book

The Vitreous State: Thermodynamics, Structure, Rheology, and Crystallization

TL;DR: In this article, the authors describe a general approach to the description of the structure of glasses and the statistical physics of under-cooled Melts and Glasses, as well as the theory of crystal growth and dissolution in under- cooled Melts.
Journal ArticleDOI

Pressure drop and heat transfer study in tube-in-tube helical heat exchanger

TL;DR: In this paper, the authors investigated the hydrodynamics and heat transfer characteristics of tube-in-tube helical heat exchanger at the pilot plant scale, where the inner and outer tubes were fitted with semicircular plates to support the inner tube and provide high turbulence in the annulus region.
Journal ArticleDOI

Steady flow of an Eyring Powell fluid over a moving surface with convective boundary conditions

TL;DR: In this paper, the effects of emerging fluid parameters (ϵ, (δ) and Prandtl number (Pr) on the velocity and temperature are illustrated through graphs and tables for different values of λ.
Journal ArticleDOI

Rheological properties of amorphous and semicrystalline polylactic acid polymers

TL;DR: In this article, the viscosities of two types of PLA resins (amorphous and semicrystalline) at 150 and 170°C and at various shear rates (30, 50, 70, 90, 110, 130, and 150 rpm screw speeds) were measured with a tube rheometer on an extruder.