The flow of fluid will be laminar when - Fluid Mechanics

Q.  The flow of fluid will be laminar when,
- Published on 04 Aug 15

a. Reynold's number is less than 2000
b. the density of the fluid is low
c. both a. and b.
d. none of the above

ANSWER: both a. and b.

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    Discussion

  • Pankaj   -Posted on 29 Sep 15
    When there in no microscopic mixture of adjacent layers in a fluid flow, then the flow is called as laminar. Fluid tends to flow without lateral mixing at low velocities. When fluid flow in pipe is laminar, then all the particles in the fluid have a very orderly motion. All particles move in a straight line parallel to the pipe wall.

    Laminar flow generally occurs in high viscosity fluids. Reynold's number for viscous fluid is less than 2000.
    Therefore, Reynold's number for laminar flow is less than 2000. Density of the fluid is less for laminar flow.

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