Shear Stress 3
Shear Stress 3 :
(n.) Drilling Fluids. The force per unit area required to sustain a constant rate of fluid movement. Mathematically, shear stress can be defined as: If a fluid is placed between two parallel plates spaced 1. 0 cm apart, and a force of 1. 0 dyne is applied to each square centimeter of the surface of the upper plate to keep it in motion, the shear stress in the fluid is 1 dyne/cm2 at any point between the two plates. See: Bingham plastic model, Brookfield viscometer, centipoise, gel strength, Herschel-Bulkley fluid, high-pressure, high-temperature viscometer, Newtonian fluid, non-Newtonian fluid, plastic fluid, plastic viscosity, power-law fluid, pseudoplastic, rheological property, rheology, shear rate, viscosity, yield point
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