1.3. Energy Transfer in Turbulence

Try these first

1. 1.

   What is the main purpose of Large Eddy Simulation?

   Hint

   Think about the balance between accuracy and computational resources.

2. 2.

   Define small eddies in turbulent flow.

   Hint

   Consider their behavior in comparison to large eddies.

3. 3.

   What defines Large Eddy Simulation?

   • Resolving small eddies
   • Resolving large eddies and modeling small
   • A direct simulation method

   Hint

   Think about which scale is actually resolved in LES.

4. 4.

   True or False: Small eddies are considered isotropic.

   • True
   • False

   Hint

   Recall the characteristics of eddies based on their scale.

5. 5.

   Consider a scenario where your simulation environment is limited to resolving only small eddies. Discuss the limitations and implications this might have on your turbulence model.

   Hint

   Consider what you might miss or over-simplify using this approach.

6. 6.

   Propose how filtering techniques in LES might evolve to improve the resolution of smaller eddies without substantially increasing computational costs.

   Hint

   Think about advancements in computational resources and modeling techniques.