8.4.2. Interface Boundary Conditions

Try these first

1. 1.

   What is the no-slip boundary condition?

   Hint

   Think about a fluid touching a stationary object.

2. 2.

   Define shear stress.

   Hint

   Consider the force applied along a surface.

3. 3.

   What does the no-slip boundary condition refer to?

   • a) Fluid velocity at solid is greater than zero
   • b) Fluid velocity at solid is equal to that solid's velocity
   • c) Fluid velocity at solid is less than zero

   Hint

   Consider flow near a stationary surface.

4. 4.

   True or False: At the interface between two fluids, the velocities of the fluids must match.

   • True
   • False

   Hint

   What happens when fluids meet?

5. 5.

   Analyze a scenario where two liquids of different viscosities are in a cuvette. Describe the expected flow behavior at their interface.

   Hint

   Consider how viscosity affects shear and flow.

6. 6.

   Design a small system where the no-slip condition would yield significant results. Detail your considerations.

   Hint

   Think about how the liquid interacts with pipe walls.