4.3. Gradual Contraction

Try these first

1. 1.

   What is the minor loss coefficient used to quantify?

   Hint

   Think about what factors cause energy loss in fluid motion.

2. 2.

   Define head loss in simple terms.

   Hint

   Consider the components of energy in fluid dynamics.

3. 3.

   What does the minor loss coefficient 'k' indicate in fluid mechanics?

   • A. Total head loss
   • B. Energy loss due to velocity changes
   • C. Pressure increase

   Hint

   Focus on flow changes and energy transitions.

4. 4.

   True or False: Gradual contractions are always preferred over sudden contractions in pipe systems.

   • True
   • False

   Hint

   Think about efficiency in piping design.

5. 5.

   Given a fluid flowing with a velocity of 2 m/s through a pipe with a minor loss coefficient of k=0.05, calculate the head loss assuming a smooth gradual contraction.

   Hint

   Using the gravity constant will help you verify your answer.

6. 6.

   If the diameter of a pipe is reduced from 0.5 m to 0.25 m with a head loss of 5 m observed, derive how much energy was lost before and after the reduction.

   Hint

   Consider flow continuity and how the diameter affects the velocity.