a. No slip at boundary. b. Due to viscosity there is a shear between fluid layers which is given by Ʈ= µ du/dy for flow in X direction. c. The flow is rotational. d. Due to viscous shear, there is continuous dissipation of energy and for maintaining the flow energy must be supplied by externally. e. Loss of energy is proportional to first power of velocity and first power of viscosity. f. No mixing between different fluid as long as pVl/ µ is less thsn critical value of Reynolds number. Examples of Laminar or viscous flow: 1. Underground flow. 2. Flow past tiny bodies. 3. Flow of oil in measuring instruments. 4. Movement of blood in the arteries of a human body. 5. Rise of water in plants through their roots.
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