Dictionary » A » Apparent viscosity

Apparent viscosity

Definition

noun

(physiology) The ratio of shear stress to shear rate in a fluid


Supplement

The apparent viscosity in Newtonian fluid (homogenous) remains the same with changing shear strain rate at constant temperature and pressure. However, a non-Newtonian fluid, the apparent viscosity changes with the rate of shear strain, e.g. apparent viscosity decreases as shear rate increases, as it occurs in sheer thinning (pseudoplastic) fluid.

In blood physiology, the circulating blood is a non-Newtonian fluid, and thus the apparent viscosity describes the resistance to blood flow in small blood vessels.


Abbreviation: AV

Also called:

  • effective viscosity (non-Newtonian fluid)

Mentioned in:


Please contribute to this project, if you have more information about this term feel free to edit this page



This page was last modified 09:16, 5 July 2011. This page has been accessed 9,638 times. 
What links here | Related changes | Permanent link