12.4.2. Sketching of Streamlines

Try these first

1. 1.

   What is a streamline?

   Hint

   Think about the path of a leaf floating on a river.

2. 2.

   What happens to fluid speed in a converging nozzle?

   Hint

   Consider how a hose works when you cover the end.

3. 3.

   What is the effect of a converging nozzle on fluid velocity?

   • It decreases
   • It remains constant
   • It increases

   Hint

   Think about how water sprays from a hose.

4. 4.

   True or False: In steady flow, the time component of acceleration is zero.

   • True
   • False

   Hint

   Consider the definition of steady flow.

5. 5.

   Given the velocity of a fluid at the entrance of a nozzle as 10 ft/s, calculate the acceleration at both the entrance and exit points where velocity triples.

   Hint

   Use the relationship between velocity and the area.

6. 6.

   Sketch the streamline pattern for a fluid flowing around a cylinder given its flow characteristics.

   Hint

   Consider the equations relating to cylindrical flows.