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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