Question
Question: In which of the following figures, stream lines shown is/are correct?...
In which of the following figures, stream lines shown is/are correct?
A
(A)
B
(B)
C
(C) upper lower
D
(D) upper lower
Answer
(A) and (C)
Explanation
Solution
Streamlines are closer together where fluid velocity is higher. In figure (A), the bump obstructs the flow, causing the fluid to accelerate over it, thus compressing the streamlines. In figure (C), the airfoil's curved upper surface forces the fluid to travel faster, leading to compressed streamlines. Figures (B) and (D) depict incorrect velocity distributions and flow patterns.