Podcast
Questions and Answers
What is viscosity?
What is viscosity?
Viscosity is defined as the resistance of a fluid to flow.
Explain how temperature affects the viscosity of most liquids.
Explain how temperature affects the viscosity of most liquids.
The viscosities of liquids decrease as temperature increases.
According to the Eyring theory, what permits flow in liquids?
According to the Eyring theory, what permits flow in liquids?
Vacancies in liquid permit flow in Eyring theory.
What is the Arrhenius equation used to describe in terms of viscosity?
What is the Arrhenius equation used to describe in terms of viscosity?
At what pressure do most liquids exhibit constant viscosity?
At what pressure do most liquids exhibit constant viscosity?
How does viscosity of most gases change with increasing temperature?
How does viscosity of most gases change with increasing temperature?
What forces act on a falling ball in a falling ball viscometer?
What forces act on a falling ball in a falling ball viscometer?
When does a falling ball in a falling ball viscometer reach terminal velocity?
When does a falling ball in a falling ball viscometer reach terminal velocity?
Which type of viscometers are best for characterizing non-Newtonian and time-dependent behavior?
Which type of viscometers are best for characterizing non-Newtonian and time-dependent behavior?
What is the shear rate proportional to in rotational viscometers?
What is the shear rate proportional to in rotational viscometers?
In which region is the drag coefficient in falling ball viscometers typically measured?
In which region is the drag coefficient in falling ball viscometers typically measured?
What type of viscometer consists of two annular cylinders with a narrow gap between them?
What type of viscometer consists of two annular cylinders with a narrow gap between them?
What are fluids that do not follow Newton's law of viscosity known as?
What are fluids that do not follow Newton's law of viscosity known as?
Define apparent viscosity.
Define apparent viscosity.
What type of fluids obey the power law model?
What type of fluids obey the power law model?
What is the consistency coefficient in the power law model?
What is the consistency coefficient in the power law model?
What does the flow behavior index represent in the power law model?
What does the flow behavior index represent in the power law model?
In Newtonian fluids, what is the behavior of viscosity with respect to shear rate?
In Newtonian fluids, what is the behavior of viscosity with respect to shear rate?
