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Questions and Answers
According to Newton's law of viscosity, what is the relationship between shear stress and shear rate in Newtonian fluids?
According to Newton's law of viscosity, what is the relationship between shear stress and shear rate in Newtonian fluids?
What is the defining characteristic of Newtonian fluids?
What is the defining characteristic of Newtonian fluids?
Which of the following is an example of a Newtonian fluid?
Which of the following is an example of a Newtonian fluid?
What are the properties of Newtonian fluids?
What are the properties of Newtonian fluids?
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In which application would Newtonian fluids be suitable?
In which application would Newtonian fluids be suitable?
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Study Notes
Newton's Law of Viscosity
- Shear stress is directly proportional to shear rate in Newtonian fluids.
- The relationship can be expressed mathematically as τ = μ * (du/dy), where τ is shear stress, μ is dynamic viscosity, and (du/dy) is the shear rate.
Defining Characteristic of Newtonian Fluids
- Newtonian fluids maintain a constant viscosity regardless of the shear rate applied.
- Their flow behavior is predictable and follows a linear relationship between shear stress and shear rate.
Examples of Newtonian Fluids
- Water is a common example of a Newtonian fluid.
- Other examples include air, mineral oils, and alcohols.
Properties of Newtonian Fluids
- Exhibits a uniform viscosity that does not change with the rate of shear.
- Flow properties can be reliably characterized by the fluid's viscosity value, which is constant at a given temperature.
Applications of Newtonian Fluids
- Ideal for use in applications requiring consistent flow characteristics, such as hydraulic systems, lubricants, and where precise fluid movement is necessary.
- Commonly used in engineering processes and various industrial applications that involve mechanical systems.
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Description
Explore the difference between Newtonian and Non-Newtonian fluids in this quiz. Learn about the behavior of Newtonian fluids according to Sir Isaac Newton's law of viscosity, and how they differ from non-Newtonian fluids in response to applied shear force.
