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What are fluids in science?
In science, fluids are substances that can flow and take the shape of their container. They include liquids and gases. Fluids have the ability to exert pressure and are characterized by their ability to deform under shear stress.
Why fluids do not sustain shear stress?
Fluids do not sustain shear stress because they undergo continuous deformation under applied shear forces. Unlike solids that have a defined shape and can resist shear stress, fluids flow and deform when subjected to shear, resulting in no sustained shear stress. This behavior is a fundamental property of fluids known as viscosity.
The relationship between shear rate and viscosity?
Shear rate and viscosity are related to each other. According to shear rate and viscosity we can classifying the materials especially paints. Fluids are divided into two types like 1.NEWNONION FLUIDS and 2.NON NWETONINON FLUIDS based on shear rate and viscosity. In fluids if there no change in viscosity with respective shear rate, such type fluids are known as nwetonion fluids. Viscosity changes with respective shear rate such type of fluids are known as non nwetonion fluids.
What are some examples of Newtonian fluids and how do they behave under shear stress?
Newtonian fluids are fluids that have a constant viscosity, such as water and most oils. When subjected to shear stress, Newtonian fluids exhibit a linear relationship between the shear rate and shear stress, meaning they flow consistently and predictably.
Is shear thinning fluids and the linear viscoelastic fluids are the same?
no
What is Study of non newtonian fluids?
The study of non-Newtonian fluids involves understanding fluids that do not follow Newton's law of viscosity. These fluids exhibit unique behaviors such as shear-thinning (viscosity decreases with increased shear rate) or shear-thickening (viscosity increases with increased shear rate). Understanding these behaviors is important in various industries such as food processing, cosmetics, and medicine.
Are both gases and liquids fluids?
yes, gases and liquids are fluids. this term is usually used when referring to resistance since frictio occurs in solids.
What are the differences between Newtonian and non-Newtonian fluids and how do these differences affect their flow behavior?
Newtonian fluids have a constant viscosity regardless of the applied stress, while non-Newtonian fluids have a viscosity that changes with the applied stress. This difference affects their flow behavior as Newtonian fluids flow consistently, following Newton's law of viscosity, while non-Newtonian fluids can exhibit complex flow patterns such as shear-thinning or shear-thickening behavior.
What is negative shear and Positive shear?
The difference between a positive shear and a negative shear is the direction the image is distorted into
What are newtanion and non newtanion fluids?
Newtonian fluids have a constant viscosity regardless of the applied shear rate, while non-Newtonian fluids have a variable viscosity that changes with the applied shear rate. Examples of Newtonian fluids include water and most oils, while examples of non-Newtonian fluids include ketchup and toothpaste.
What is infinite shear viscosity?
Infinite shear viscosity refers to the viscosity of a fluid measured at very high shear rates, where the flow behavior becomes independent of the rate of shear applied. In this regime, the fluid's resistance to flow stabilizes, allowing for a consistent measurement of its viscosity. This concept is particularly relevant in materials that exhibit non-Newtonian behavior, where viscosity can change based on the shear rate. Infinite shear viscosity is critical in understanding the flow behavior of complex fluids such as polymers and suspensions.
What is difference between shear and friction?
Shear refers to forces acting parallel to a surface, causing one layer to slide over another. Friction, on the other hand, is the resistance encountered when two surfaces move against each other. In essence, shear involves the internal deformation of material, while friction involves the resistance to relative motion between surfaces.
