Pick out the wrong statement about a streamline ?
Correct answer: B. It is always parallel to the main direction of the fluid flow
- A. It is a line across which there is no flow and it is equivalent to a rigid boundary
- B. It is always parallel to the main direction of the fluid flow
- C. Streamlines intersect at isolated point of zero velocity and infinite velocity
- D. The fluid lying between any two streamlines can be considered to be in isolation and the
- E. streamline spacing varies inversely as the velocity
Explanation
A streamline is tangent to the local fluid velocity, not necessarily parallel to one fixed overall or main flow direction, so statement A is the wrong one. Streamline spacing decreases where velocity increases, and streamlines may meet at special zero- or infinite-velocity points.
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