2..1. Viscous Flow and Inviscid Flow

Try these first

1. 1.

   What is viscous flow?

   Hint

   Think about fluids like honey.

2. 2.

   Define inviscid flow.

   Hint

   Consider air at low speeds.

3. 3.

   What defines viscous flow?

   • A flow with negligible resistance
   • A flow where viscosity is significant
   • A flow that is always steady

   Hint

   Recap the definition we discussed.

4. 4.

   True or False: External flow occurs in a confined space.

   • True
   • False

   Hint

   Think about how airflow interacts with an open area.

5. 5.

   Design a system where you can practically observe the transition from laminar to turbulent flow. Explain how you would conduct the experiment and what indicators you would note.

   Hint

   Look for changes in flow stability with increasing velocity.

6. 6.

   Calculate whether airflow can be treated as incompressible or compressible at speeds approaching 200 m/s. Justify your reasoning using the Mach number.

   Hint

   Consider the relationship between flow speed and sound speed in determining compressibility.