1.1. Prof. Mohammad Saud Afzal

Try these first

1. 1.

   Define what a fluid is.

   Hint

   Think about how water behaves when poured.

2. 2.

   What does viscosity refer to?

   Hint

   Consider how thick liquids move.

3. 3.

   What is the primary difference between fluids and solids?

   • Fluids can resist shear
   • Solids cannot deform
   • Fluids continuously deform

   Hint

   Remember the characteristics of fluids.

4. 4.

   Is the Navier Stokes equation relevant for viscous fluids?

   • True
   • False

   Hint

   Think about its application in engineering.

5. 5.

   Given a fluid element, derive the equation for its angular rotation rate using material derivatives.

   Hint

   Relate the properties back to their definitions in rotational dynamics.

6. 6.

   Explain how viscosity affects flow rates in varying applications, such as pipes versus open channels.

   Hint

   Use real-world examples to illustrate the differences.