Question

Definition of dynamic viscosity in fluid mechanics

Answer 1

Dynamic viscosity is the force needed by a fluid to overcome its own internal molecular friction so that the fluid will flow. In other words, dynamic viscosity is defined as the tangential force per unit area needed to move the fluid in one horizontal plane with respect to other plane with a unit velocity while the fluid's molecules maintain a unit distance apart.

Answer 2

Dynamic viscosity is the force needed by a fluid to overcome its own internal molecular friction so that the fluid will flow. In other words, dynamic viscosity is defined as the tangential force per unit area needed to move the fluid in one horizontal plane with respect to other plane with a unit velocity while the fluid's molecules maintain a unit distance apart.Dynamic viscosity is one of the measures of fluid viscosity. Another measure of fluid viscosity is kinematic viscosity.