shear rate


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shear rate

[′shir ‚rāt]
(fluid mechanics)
The relative velocities in laminar flow of parallel adjacent layers of a fluid body under shear force.
References in periodicals archive ?
Shear rate) and viscosity of emulsion as a function of shear rate has been investigated (Fig.
Additionally, at low shear rates, a shear-thinning behavior is observed as the sheared suspension microstructure changes with the flow: "ordered" layers of particles are formed when Brownian effects are no more dominant, lowering the viscosity when increasing the shear rate.
Different viscometers measure viscosity at different shear rate ranges.
Prior to the engine start-up, the lubricant is at rest, such that the shear rate is zero, and will increase during the engine cranking.
Control software allows the quick and easy production of flow-curves, plots of viscosity as a function of shear rate, for sensitive and detailed rheological analysis.
To get the behavior of blood in a shear flow, the key features is shear rate which is defined as a measure of the deformation of the liquid.
In their work, the researchers took into account a number of variables, including the type of processing equipment used: high-shear blending systems compared with recirculating systems, water temperature (4 C compared with 22 C), and high and low shear rates.
For one headbox sample we determined the effect of shear rate on drainage resistance.
Viscosity is an expression of the relation between shear stress and shear rate.
Also, unexpectedly, these fluids showed a similar response to rubbing -- shearing -- by a surface moving at increasing speeds: Friction increased exponently as the shear rate increased, and that exponential relationship held constant over a range of molecules and surfaces.
As the shear rate is increased the apparent viscosity often decreased as the shear rate is increased.