Definition of coefficient of viscosity in US English:

coefficient of viscosity


  • The degree to which a fluid resists flow under an applied force, expressed as the ratio of the shearing stress to the velocity gradient. The coefficient of viscosity of liquids decreases as temperature increases because the bonds between molecules are weakened.

    • ‘Because of its very small dashpot coefficient of viscosity, the flow sensor attains its peak deformation much more rapidly than the other structures.’
    • ‘For each type of viscoelastic body modeled, the values of the two spring constants as well as the dashpot coefficient of viscosity must be specified.’
    • ‘That 1843 paper was the first to properly identify the coefficient of viscosity and its role as a multiplying factor for the velocity gradients in the flow.’