Question

what is
velocity gradient?
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Answer 1

Answer:

The difference in the flow of velocity between the adjacent layers of the fluid is measured in velocity gradient.

Explanation:

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Answer 2

Answer:

In continuum mechanics, the strain-rate tensor or rate-of-strain tensor is a physical quantity that describes the rate of change of the deformation of a material in the neighborhood of a certain point, at a certain moment of time.