Question

A fluid particle flowing along a stagnation streamline experiences what change in velocity?

a) Decrease
b) Increase
c) Remains constant
d) Reverses

Answer 1

The fluid particle flowing along a stagnation streamline experiences a decrease in velocity.

Step-by-step explanation:

The fluid particle flowing along a stagnation streamline experiences a decrease in velocity.

This is because a stagnation streamline represents a streamline in a fluid flow where the velocity of the particles is brought to zero. As the fluid particle moves away from the stagnation point, its velocity decreases due to the effect of pressure gradients and viscous forces.

For example, consider the flow of water around an object such as a cylinder. As the water approaches the front of the cylinder along the stagnation streamline, its velocity is highest. However, as it flows along the surface of the cylinder and moves away from the stagnation point, the velocity decreases.