2.1. Lecture - 53

Try these first

1. 1.

   What is the Stokes Hypothesis?

   Hint

   Think about the relationship between different types of pressure.

2. 2.

   List two characteristics of viscous fluids.

   Hint

   Consider how these fluids behave in motion.

3. 3.

   What does the Navier-Stokes equation describe?

   • Temperature changes in a fluid
   • The motion of viscous fluids
   • Pressure only in incompressible fluids

   Hint

   Think about the role of viscosity in fluid behavior.

4. 4.

   True or False: The mechanical pressure is always equal to thermodynamic pressure.

   • True
   • False

   Hint

   Mention conditions under which this holds true.

5. 5.

   Consider a pipe with varying diameter. Calculate how the flow velocity changes from a wider section to a narrower section using Bernoulli's principle.

   Hint

   How does area reduction affect velocity?

6. 6.

   Explain a real-world scenario where understanding the difference between mechanical and thermodynamic pressure is vital.

   Hint

   Think of applications in engineering or natural systems like weather.