20.5.2. Tips for Applying Linear Momentum Equation

Try these first

1. 1.

   Define linear momentum equation in your own words.

   Hint

   Focus on the concept of force and fluid movement.

2. 2.

   What does the momentum flux correction factor (β) indicate?

   Hint

   Think about fluid flow variations.

3. 3.

   What does the momentum flux correction factor (β) account for?

   • Uniform velocity
   • Non-uniform velocity
   • Constant pressure

   Hint

   Think about corrections for real-world flows.

4. 4.

   True or False: The linear momentum equation only applies in one dimension.

   • True
   • False

   Hint

   Consider the nature of fluid movement.

5. 5.

   A control volume experiences fluid inflow at 10 m/s with a density of 1,000 kg/m³. The outlet's velocity is 8 m/s. Calculate the net force acting on the control volume assuming no external forces. Consider the incoming density and pressure as well.

   Hint

   Remember the balance between inflow and outflow!

6. 6.

   If a large pipe has an increasing diameter, describe how the momentum flux will change throughout the pipe. Consider both sections of varying diameters.

   Hint

   Think about how conservation applies in varying cross-sections.