# Shear rate

## Description

Shear rate is the rate at which a progressive shearing deformation is applied to some material. The shear rate for a fluid flowing between two parallel plates, one moving at a constant speed and the other one stationary (Couette flow), is related to the velocity of the moving plate and the distance between the two parallel plates

Related formulas## Variables

γ | Shear rate (1/s) |

v | Velocity of the moving plate (m/s) |

h | Distance between the two parallel plates (m) |