12.2.2. Definitions of the Streamlines

Try these first

1. 1.

   Define velocity distribution as it applies to fluid dynamics.

   Hint

   Think about how flow speed changes in a nozzle.

2. 2.

   What is steady flow?

   Hint

   Consider what happens to the flow when conditions remain unchanged.

3. 3.

   What is the formula to calculate acceleration in fluid flow?

   • A = du/dt
   • A = dV/dt
   • A = dP/dt

   Hint

   Recall the definition of acceleration in the context of fluid mechanics.

4. 4.

   True or False: In a steady flow, local acceleration is typically non-zero.

   • True
   • False

   Hint

   Think about the implications of 'steady' in fluid dynamics.

5. 5.

   If a fluid passes through a nozzle, entering at 15 ft/s and exiting at 35 ft/s, compute the average acceleration if the time taken was 2 seconds. How does this relate to the principles of continuity?

   Hint

   Remember how velocity and area are interconnected in continuous flow systems.

6. 6.

   Given a reducing diameter nozzle with inlet diameter D1 = 4 inches and outlet diameter D2 = 2 inches, if the fluid enters at a velocity of 20 ft/s, calculate the exit velocity.

   Hint

   Ensure you remember the area calculation for circular sections.