3.2. Force Balance Analysis

Try these first

1. 1.

   Define laminar flow.

   Hint

   Think about how layers of strips would move over each other.

2. 2.

   What is viscosity?

   Hint

   Consider the sticky nature of syrup.

3. 3.

   What does laminar flow refer to?

   • Chaotic flow
   • Smooth flow
   • Suction flow

   Hint

   Visualize how water flows in layers versus splashes.

4. 4.

   The Reynolds number above which flow becomes turbulent is typically?

   • True
   • False

   Hint

   Recall the transition point from calm to chaotic flow.

5. 5.

   A fluid with a viscosity of 1.0 poise flows between fixed plates 0.2 meters apart with a pressure drop of 1000 Pa. Calculate the average velocity.

   Hint

   Refer to the formula V_avg = -1/12 * (μ * dP/dx) * t^2.

6. 6.

   Given a flow through a pipe with varying diameter, derive the expression for pressure loss in terms of Reynolds number and viscosity.

   Hint

   Incorporate the Bernoulli equation and shear flow concepts.