3.3. Important Terms in Boundary Layer Analysis

Try these first

1. 1.

   What is the transition zone?

   Hint

   Think about where flow order changes.

2. 2.

   Define laminar sub-layer.

   Hint

   Consider its proximity to the solid surface.

3. 3.

   What happens in the transition zone?

   • A) Viscosity decreases
   • B) Flow becomes laminar
   • C) Flow transitions to turbulent

   Hint

   Consider the flow dynamics.

4. 4.

   True or False: The velocity profile inside the laminar sub-layer is assumed to be linear.

   • True
   • False

   Hint

   Think about viscous effects.

5. 5.

   A fluid with a Reynolds number of 4000 flows past a flat plate. Describe what happens as this fluid continues flowing downstream.

   Hint

   Consider flow stability and flow rates.

6. 6.

   Calculate the boundary layer thickness (δ) at a specific point using the 99% free stream velocity approximation, given the properties of the fluid and flow conditions.

   Hint

   Refer to boundary layer theory and relevant equations.