12.4.2.2. Boundary Condition Application

Try these first

1. 1.

   What is a boundary layer?

   Hint

   Think about how fluid behaves when it touches a solid.

2. 2.

   Define laminar flow.

   Hint

   Consider a steady stream of smooth water.

3. 3.

   What defines a boundary layer?

   • It occurs in the bulk of the flow.
   • It is in the region of flow near a surface.
   • It is a region of turbulent flow only.

   Hint

   Think about where the viscous effects are significant.

4. 4.

   Reynolds number helps determine whether the flow is laminar or turbulent.

   • True
   • False

   Hint

   Recall what the critical values indicate.

5. 5.

   Given a flat plate with a flow Reynolds number of 1×10^6, discuss the implications for boundary layer thickness and transitions in flow behavior.

   Hint

   Refer to the relationship between Reynolds number and flow behavior.

6. 6.

   Explore the impact of boundary layer thickness on drag force for an aircraft wing design. How would you go about modifying a design to reduce drag?

   Hint

   Consider how shape and surface treatments affect flow types.