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Which of the following is true for Real fluid?

1. Is incompressible

2. Has surface tension

3. Is viscous


1. Only 1
2. Both 2 and 3
3. Only 3
4. Both 1 and 2

1 Answer

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Best answer
Correct Answer - Option 2 : Both 2 and 3

Explanation:

Real Fluid

  • All the fluids are real as all the fluids possess viscosity.
  • Real fluid is Compressible and it has some value of shear force.
  • Its surface tension value in non-zero.

Ideal fluid:

  • Ideal fluid is Incompressible and it has zero value of shear force.
  • The ideal fluid does not actually exist in nature, but sometimes used for fluid flow problems.
  • An ideal fluid is a fluid that has several properties including the fact that it is :
    • Incompressible – the density is constant
    • Irrotational – the flow is smooth, no turbulence
    • Nonviscous – (Inviscid) fluid has no internal friction

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