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The 2-D flow with velocity
  • a)
    Compressible and irrotational
  • b)
    Compressible and not irrotational
  • c)
    Incompressible and irrotational
  • d)
    Incompressible and not irrotational
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The 2-D flow with velocitya)Compressible and irrotationalb)Compressibl...
Concept:
Incompressible flow: When the density of fluid remains constant that it does not change with respect to time or space, then it is known as an incompressible flow.
General continuity equation:

For steady & incompressible flow:

Hence, it is incompressible flow.
Rotational flow: When the fluid particles rotate about their center of mass, then the flow is known as rotational flow.
For rotational flow, the following condition must be followed.

Here, u = (x + 2y + 2), v = (4 - y), w = 0

2 ≠ 0
Therefore, it is a rotational flow.
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The 2-D flow with velocitya)Compressible and irrotationalb)Compressible and not irrotationalc)Incompressible and irrotationald)Incompressible and not irrotationalCorrect answer is option 'D'. Can you explain this answer?
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