2.3. Free Surface Boundary Condition

Try these first

1. 1.

   What does the free surface boundary condition imply about pressure at the surface of a fluid?

   Hint

   Think about what happens at the free surface of water.

2. 2.

   What are the two primary components of wave energy?

   Hint

   Consider the energy forms present in waves.

3. 3.

   What is the pressure condition at a free surface?

   • Zero
   • Atmospheric Pressure
   • Variable

   Hint

   Think about the pressure exerted on surfaces in a fluid.

4. 4.

   True or False: Dynamic pressure is influenced by the depth of water alone.

   • True
   • False

   Hint

   Consider what dynamic pressure encompasses.

5. 5.

   A tank filled with water has waves induced by a mechanical shaker. Use Bernoulli's principle to describe how pressure varies with wave height in the tank.

   Hint

   Consider how velocity changes with wave height.

6. 6.

   Calculate the potential energy of a wave with a height of 0.5 meters, using the formula and assuming γ=9.81 kN/m³.

   Hint

   Remember to substitute wave amplitude in the equation.