mechanical engineering : fluid mechanics

THIS PRESENTATION HELPS YOU TO UNDERSAND ABOUT DATA ACQUISITION

A fluid at rest experiences no shear force. When in motion, though, shear forces can be set up due to viscosity and ‘turbulence’ which oppose motion, producing a ‘frictional’ effect. A fluid consists of a large number of individual particles moving in the general direction of flow but usually not parallel to each other. The path followed by a particle is called a path line. A pathline (or particle path) is the trajectory of an individual element of fluid. At any given instant of t...