1.7. Pressure Forces and Shear Forces

Try these first

1. 1.

   What characterizes laminar flow?

   Hint

   Think about how fluid moves in a straight line.

2. 2.

   What is the maximum Reynolds number for laminar flow?

   Hint

   It's a key number you need to remember.

3. 3.

   What type of flow has a Reynolds number below 2300?

   • Turbulent Flow
   • Transitional Flow
   • Laminar Flow

   Hint

   Consider characteristics of slow, smooth flow.

4. 4.

   True or False: Turbulent flow is characterized by smooth streamlines.

   • True
   • False

   Hint

   Think about flow behavior in chaotic situations.

5. 5.

   A liquid with a density of 800 kg/m³ flows in a pipe of diameter 0.1 m at a speed of 2 m/s with a dynamic viscosity of 0.002 Pa·s. Determine the flow type.

   Hint

   Remember, Re > 4000 indicates turbulent flow.

6. 6.

   Design a pipeline system that ensures laminar flow for a fluid with a density of 900 kg/m³ and viscosity of 0.003 Pa·s. What should the maximum velocity be?

   Hint

   Consider how to keep the Re below 2300 while factoring in fluid properties.