Question

In case of liquids, what does the term streamline refer to? Hiw does it differ from a tube of flow?

Answer 1

Dear Student ,


LAMINAR (STREAMLINE) FLOW
The flow separates into "layers" that slide relative to one another without mixing. If we introduce a coloured stream into the laminar flow, the colour will stay in the stream. The flow is called steady. Laminar flow can be represented by a set of lines known as streamlines (flow lines).
An individual particle will follow a streamline.
The flow pattern does not change with time.
All particles starting on a streamline will continue to move on that streamline.
A set of streamlines is called a flow tube.
Streamlines can't cross nor intersect the "walls" of the flow tube.
The instantaneous velocity of the particle is in the direction of the tangent to the streamline.
Density of streamlines proportional to the velocity: streamlines close together high velocity, streamline far apart low velocity




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