Acceleration having a nonzero value in uniform flow - Fluid Mechanics

Q.  Which acceleration has a nonzero value in uniform flow?
- Published on 04 Aug 15

a. Local acceleration
b. Convective acceleration
c. Both local as well as convective acceleration
d. unpredictable

ANSWER: Local acceleration

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    Discussion

  • Pankaj   -Posted on 25 Sep 15
    Acceleration of a fluid particle can be categorized in various type such as Local acceleration, Temporal acceleration, Convective acceleration, Material acceleration or Substantial acceleration. The Local acceleration or Temporal acceleration can be defined as the rate of increase of velocity with respect to time at a single given point in a flow field. The Local acceleration is zero for steady flow. This acceleration has a nonzero value in uniform flow.

    The Convective acceleration can be defined as the rate of increase of velocity with respect to change in the position of fluid particle in a flow field. It is zero for uniform flow but not zero for steady flow.

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