Railways Technical Ability Fluid Mechanics and Machinery Question Bank Fluid Mechanics

  • question_answer Which of the following relations must hold for an irrotational two-dimensional flow in the \[x-y\] plane:

    A) \[\frac{\partial v}{\partial y}-\frac{\partial u}{\partial x}=0\]                     

    B) \[\frac{\partial u}{\partial z}-\frac{\partial v}{\partial x}=0\]

    C) \[\frac{\partial w}{\partial y}-\frac{\partial v}{\partial z}=0\]                     

    D) \[\frac{\partial v}{\partial x}-\frac{\partial u}{\partial y}=0\]

    Correct Answer: D

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