06 rheology - Typical Viscosities of Fluids at Room...

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Unformatted text preview: Typical Viscosities of Fluids at Room Temperature Fluid [ mPa s ] Petroleum 0.65 Water 1.0 Mercury 1.5 Grape juice 2-5 Blood (at 37 C) 4-15 Coffee cream 10 live oil 2 Olive oil 10 Honey 10 4 Tar 10 6 Asphalt 10 8 Ceramic slurry 10 - 10 3 Streaming liquid confined between two surfaces Velocity Moving Surface Force Distance Fixed Surface Tau = eta * D hear stress = viscosity * shear rate Shear stress viscosity shear rate Shear rate = d velocity /d distance low and viscous behavior of a Flow and viscous behavior of a Newtonian liquid l l t i it l t Flow plot Viscosity plot y ss Viscosity Shear stres hear rate (D) Shear rate (D) const Shear rate (D) Shear rate (D) = const f (D) Viscous behavior of various complex fluids Shear thickening ) Liquid Newton liquid iscosity ( Pseudoplastic (structural) liquid Pseudoplastic with yield stress V Shear rate D Flow and viscous behavior of a dilatant fluid Flow Plot Viscosity Plot y ss Viscosity hear stre V Sh Shear rate (D) Shear rate (D) = f (D) ( Shear thickening) Pseudo-plastic Fluids...
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06 rheology - Typical Viscosities of Fluids at Room...

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