Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies parabolically with maximum at the centre
varies linearly from zero at walls to maximum at centre
None of these
is constant over the cross-section

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Hydraulics and Fluid Mechanics in ME
Two dimensional flows occurs when

The magnitude and direction of the velocity do not change from point to point in the fluid
The velocity of successive fluid particles, at any point, is the same at successive periods of time
The direction and magnitude of the velocity at all points are identical
The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

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