Forces act on fluid while considering fluid dynamics - Fluid Mechanics

Q.  Which of the following forces generally act on fluid while considering fluid dynamics?

1. Viscous force
2. Pressure force
3. Gravity force
4. Turbulent force
5. Compressibility force
- Published on 04 Aug 15

a. (1), (3), (4) and (5)
b. (1), (2), (3) and (5)
c. (1), (2), (3) and (4)
d. (1), (2), (3), (4) and (5)

ANSWER: (1), (2), (3), (4) and (5)

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    Discussion

  • Pankaj   -Posted on 28 Sep 15
    Generally all of the forces given in the question act on fluid while considering fluid dynamics.
    1. As all the real fluids have some viscosity, viscous force acts on fluid.
    2. Pressure force acts due to pressure gradient between two points in the direction of flow.
    3. Gravity force acts on the fluid due to its weight.
    4. Turbulence in the flowing fluid occurs turbulent force in it.
    5. Compressibility force occurs due to elastic property of the fluid.

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