Question

According to Kutta condition, if the trailing edge is cusped, then the velocities leaving the top (\(V_1\)) and bottom (\(V_2\)) surfaces at the trailing edge should be

• A. \(V_1 \ne V_2 = 0\)
• B. \(V_1 = V_2 \ne 0\)
• C. \(V_1 \ne V_2 = \text{constant}\)
• D. \(V_1 = V_2 = \infty\)

Hint:

This ensures circulation is just right to avoid infinite velocities at the sharp trailing edge.

Answer 1

The Correct Option is B

Kutta condition states that for smooth flow around a cusped trailing edge, the velocities at the upper and lower surfaces must be equal and finite.