Hydraulics & Fluid Mechanics
Fluid is a substance that

cannot remain at rest under action of any shear force
has the same shear stress.at a point regardless of its motion
always expands until it fills any container
cannot be subjected to shear forces

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Hydraulics & Fluid Mechanics
The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is

zero at plates and increases linearly to midpoint
parabolic distribution across the section
constant over the cross section
zero at the mid plane and varies linearly with distance from mid plane

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Hydraulics & Fluid Mechanics
According to Bernoulli’s equation for steady ideal fluid flow

total energy is constant throughout
velocity and pressure are inversely proportional
the energy is constant along a stream-line but may vary across streamlines
principle of conservation of mass holds

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