2.3. Laminar Flow through Circular Pipe

Try these first

1. 1.

   Define laminar flow.

   Hint

   Think about how fluid moves without turbulence.

2. 2.

   What does the Reynolds number tell us?

   Hint

   Remember the values that classify flow types.

3. 3.

   What is the characteristic of laminar flow?

   • Smooth and parallel streamlines
   • Chaotic and turbulent
   • Variable streamlines

   Hint

   Consider the opposite of turbulent flow.

4. 4.

   True or False: A Reynolds number of 3000 indicates laminar flow.

   • True
   • False

   Hint

   Remember the classifications for the Reynolds number.

5. 5.

   A fluid with a viscosity of 0.9 Pa.s flows through a circular pipe of 0.1 m diameter. If the flow rate is 0.01 m³/s, determine the pressure drop over 10 m using the appropriate equations.

   Hint

   Rearrange to isolate dp/dx.

6. 6.

   Analyze a scenario where a liquid is flowing through pipes of different diameters (0.05 m and 0.1 m) at the same flow rate. Use Reynolds number to discuss which pipe might experience laminar or turbulent flow.

   Hint

   Recall that smaller diameters typically promote laminar flow.