Source: wikibot/shear-rate
= Shear rate
{wiki=Shear_rate}
Shear rate is a measure of the rate at which one layer of a fluid moves in relation to another layer. It is a critical concept in fluid dynamics and rheology, particularly for non-Newtonian fluids, where the viscosity (resistance to flow) can vary with shear rate. Mathematically, shear rate (\\( \\dot\{\\gamma\} \\)) is defined as the change in velocity (speed) of a fluid layer divided by the distance between the layers.