1.3. Fluid Flow Models

Try these first

1. 1.

   What is the Froude number used for?

   Hint

   Think about forces that affect fluid movement.

2. 2.

   Define Reynolds number.

   Hint

   It’s important for determining flow types.

3. 3.

   What does the Froude number primarily compare?

   • Inertial vs. Viscous forces
   • Inertial vs. Gravitational forces
   • Viscous vs. Gravitational forces

   Hint

   Focus on the forces at play in fluid dynamics.

4. 4.

   True or False: Reynolds number is crucial for analyzing flows at high velocities.

   • True
   • False

   Hint

   Consider how velocity impacts fluid behavior.

5. 5.

   In a hydraulic model of a spillway, the horizontal scale is 1:300, and the vertical scale is 1:60. If the velocity in the prototype is 4 m/s, what is the velocity in the model?

   Hint

   Remember to apply the squared root to the scaling ratio correctly!

6. 6.

   Given a water channel with a prototype Manning's n of 0.035 and a new distorted model scaled at 1:150 for length and 1:450 for height, what is the model's Manning’s n?

   Hint

   Check your scaling factors and how they influence surface roughness in models.