22.7.1. Velocity Profile for Laminar Flow

Try these first

1. 1.

   What is laminar flow?

   Hint

   Think of how water flows in a straight line.

2. 2.

   What does the Reynolds number indicate?

   Hint

   It's a key number in fluid dynamics.

3. 3.

   What is the shape of the velocity profile in laminar flow?

   • Linear
   • Parabolic
   • Circular

   Hint

   Visualize how fluid flows through a pipe.

4. 4.

   True or False: Hydraulic diameter is applicable only to circular conduits.

   • True
   • False

   Hint

   Think about how different shapes of pipes can hold fluid.

5. 5.

   Calculate the wall shear stress for a fluid with a viscosity of 0.89 cP flowing through a pipe at a velocity gradient of 0.15 s^-1.

   Hint

   Convert viscosity from cP to Pa·s for the calculation.

6. 6.

   Describe how the velocity profile would change if the pipe diameter is increased while keeping the flow rate constant.

   Hint

   Consider the continuity equation in fluid dynamics.