15.2.1. Physical Modelling Experiments

Try these first

1. 1.

   What is geometric similarity?

   Hint

   Think about scaling shapes.

2. 2.

   What does dimensional analysis check?

   Hint

   Dimensions must match.

3. 3.

   What is geometric similarity?

   • Maintaining the same shape and proportions
   • Achieving equal forces
   • Matching flow patterns

   Hint

   Think of scaling shapes.

4. 4.

   The Reynolds Number helps predict:

   • True
   • False

   Hint

   What type of flow does it relate to?

5. 5.

   You have a model scaled down by a factor of 1:50 of a prototype dam. If the model has a flow velocity of 2 m/s, calculate the equivalent flow velocity in the prototype.

   Hint

   Convert the length scale to velocity using the square root of the scale factor.

6. 6.

   Create a scenario where dynamic similarity is crucial in a hydrodynamic test. Describe the factors to be considered and how you would ensure dynamic similarity.

   Hint

   Focus on the forces like pressure, gravity, and inertia.