Chapter 2 Fundamental Hydraulic Fluid Mechanics 3.Viscosity The sketch of viscosity is illustrated by Fig.2-1 Cohesion between two uo molecules. The experiments have proved that」 friction force between the two fluid u+du molecules can be described as du 2-3) A dy Where is viscosity coefficient,also kinematic viscosity Fig.2-1 The sketch of viscosity Homepage List Upwards Downward达s Retumn Exit Chapter 2 Fundamental Hydraulic Fluid Mechanics 4 3. Viscosity The experiments have proved that friction force between the two fluid molecules can be described as Where is viscosity coefficient, also kinematic viscosity. Fig.2-1 The sketch of viscosity d d Ff u A y   = =  The sketch of viscosity is illustrated by Fig. 2-1. (2-3) Cohesion between two molecules