3.1. Assumptions and Setup

Try these first

1. 1.

   What is laminar flow characterized by?

   Hint

   Think about how fluids act when flowing without obstacles.

2. 2.

   How is pressure gradient defined?

   Hint

   Consider how pressure varies in a pipe or between surfaces.

3. 3.

   What characterizes laminar flow?

   • High turbulence
   • Smooth parallel layers
   • Random mixed flow

   Hint

   Think about how layers of fluid behave during flow.

4. 4.

   True or False: The Reynolds number helps predict flow patterns.

   • True
   • False

   Hint

   What does it compare?

5. 5.

   A crude oil pipe with a diameter of 0.1 m, viscosity of 0.9 poise, and pressure difference of 5000 Pascal is given. Calculate the flow rate if the length of the pipe is 15 m.

   Hint

   Convert units carefully before calculation.

6. 6.

   For oil between parallel plates with a maximum velocity of 3 m/s and a gap of 0.05 m, find the shear stress using a dynamic viscosity of 1 Poise.

   Hint

   Identify how velocity changes across the gap.