6.3.2. Complex Flow around a Bridge Pier

Try these first

1. 1.

   What are Cauchy's equations used for?

   Hint

   Think about how fluids resist movement.

2. 2.

   Define a velocity field.

   Hint

   Consider how you would plot the speed of a flowing river.

3. 3.

   What do Cauchy's equations model?

   • Stress in fluid only
   • Fluid flow describing motion and stress
   • Pressure alone

   Hint

   Think about what happens when fluid is in motion.

4. 4.

   True or False: Navier-Stokes equations are simpler than Cauchy’s equations.

   • True
   • False

   Hint

   Remember what makes each equation fundamental.

5. 5.

   Given a certain velocity field around a bridge pier, calculate the expected stress distribution using Cauchy’s equations.

   Hint

   What formulas would you apply?

6. 6.

   Design a bridge incorporating predicted flow patterns using CFD simulations. Present your findings.

   Hint

   Focus on the variables impacting your design decision!