2. Boundary Layer Phenomena

Try these first

1. 1.

   What is the no-slip boundary condition?

   Hint

   Think about what happens at the very surface of a solid.

2. 2.

   Define boundary layer.

   Hint

   Consider how the fluid behaves close to a wall.

3. 3.

   What is the primary phenomenon described by the boundary layer theory?

   • A. Fluid remains stationary at the surface.
   • B. Fluid velocity is maximum at the boundary.
   • C. Fluid velocity changes from zero at the wall to free-stream velocity.
   • D. Fluid accelerates continuously without changes.

   Hint

   Focus on how fluid interacts with surfaces.

4. 4.

   True or False: The Reynolds number helps predict whether flow is laminar or turbulent.

   • True
   • False

   Hint

   Recall its critical thresholds that affect layering.

5. 5.

   A river flows at 3 m/s over a flat plate with planar dimensions 3 meters long. If the kinematic viscosity of the water is 0.001 m²/s, determine the Reynolds number after 2 meters from the leading edge.

   Hint

   Apply the Reynolds number formula to find the solution.

6. 6.

   Discuss the impact of increasing boundary layer thickness on flow separation during high-velocity conditions.

   Hint

   Consider the broader implications in design and aerodynamics.