4.3. Temperature Effect on Coefficient of Viscosity

Try these first

1. 1.

   What happens to the viscosity of a liquid when its temperature increases?

   Hint

   Think about molecular motion.

2. 2.

   Do gases experience increased or decreased viscosity with rising temperature?

   Hint

   Consider gas molecular activity.

3. 3.

   What effect does an increase in temperature have on the viscosity of liquids?

   • Increases viscosity
   • Decreases viscosity
   • No effect

   Hint

   Remember how heat changes fluid behavior.

4. 4.

   True or False: The viscosity of gases typically decreases with increasing temperature.

   • True
   • False

   Hint

   Think of the kinetic energy in gases.

5. 5.

   A fluid's viscosity at 25°C is 0.89 mPa·s. If its temperature is raised to 45°C, based on the Sutherland correlation, estimate the new viscosity assuming it behaves as a Newtonian fluid. Given constants a = 1.8, b = 0.54.

   Hint

   Ensure that you are using the absolute temperatures.

6. 6.

   Describe a real-world scenario where understanding the difference in viscosity between a Newtonian and Non-Newtonian fluid could impact industry practices.

   Hint

   Think about how texture impacts consumer experience.