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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.
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Alehegn Muluken
Alehegn Muluken
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What is the relationship between the shear g and the shear rate?
Viscosity is constant to the flow of the fluid.
What is a sentence for non-newtonian fluids?
A non-Newtonian fluid is a fluid whose flow properties are not described by a single constant value of viscosity. Many polymer solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup, starch suspensions, paint, blood and shampoo. In a Newtonian fluid, the relation between the shear stress and the strain rate is linear, the constant of proportionality being the coefficient of viscosity. In a non-Newtonian fluid, the relation between the shear stress and the strain rate is nonlinear, and can even be time-dependent. Therefore a constant coefficient of viscosity can not be defined. A ratio between shear stress and rate of strain (or shear-dependent viscosity) can be defined, this concept being more useful for fluids without time-dependent behavior.
Newton's law for flow of biological fluids?
What is Viscosity of the Fluid?Viscosity is very important property of the fluids. While considering the fluid for various applications it is crucial to consider the viscosity of the fluid. The fluid flows in the form of various layers as shown in figure below. The top layer of the fluid flows at higher speeds, while the layers below it move at slightly lesser speed. Thus the layers of the fluid offer resistance to the flow of the adjoining layers. This property of the fluid is called as the viscosity of the fluid. Viscosity of the fluid is defined as the property of the fluid that tends to resist the movement of one layer of the fluid over adjacent layer of the fluid.Derivation of Viscosity Formula from Newton's Law of ViscosityIn the figure shown above, let us consider two layers separated by small distance dy. Let us suppose that the velocity of the lower layer is u, so the velocity of the upper layer will be u+du, where du is the small incremental velocity. Now, the top layer tends to offer resistance to the flow of bottom layer and bottom layer offers resistance to the flow of top layer. The resistance to the flow is offered in the form of shear stress. Thus the adjoining layers of the fluid cause shear stress on the adjoining layers. The shear stress among the various layers of the fluid depends on rate of change of the velocity of the fluid with respect to its distance 'y' from the lowest layer of the fluid. Shear stress is denoted by τ (tau). This is also called as Newton's law of viscosity. It states that shear stress between various layers of the fluid is directly proportional to rate of shear strain.Shear stress τ (tau) is given by: (refer the fig I linked)Here µ (mu) is called as the coefficient of dynamic viscosity or merely viscosity. The term du/dy is the rate of shear strain or rate of shear deformation or velocity gradient. Thus viscosity is also defined as the shear stress required to produce unit rate of shear strain.Read more at the link below.
What viscosity level was the fluid flow rate the highest?
The relationship between radius and fluid flow rate is inversely proportional. As radius goes down, fluid flow rate goes up. The highest fluid flow rate will be at the lowest radius.
What is the difference between a newtonian and non-newtonian?
There are four main onesThixotropicViscosity decreases with stress over time. E.g. Some honey (keep stirring and solid honey becomes liquid)RheopecticViscosity increases with stress over time. E.g. Cream (the longer you whip it the thicker it gets)Shear thinningViscosity decreases with increased stress. E.g. Ketchup (you have to shake the bottle to get it out)Dilatant or shear thickeningViscosity increases with increased stress. E.g. Oobleck (cornstarch and water, looks like a liquid but hit it and it is a solid)
What is the relationship between the shear g and the shear rate?
Viscosity is constant to the flow of the fluid.
What is the zero shear viscosity?
The zero shear viscosity is the value of the apparent viscosity (quotient between shear stress and shear rate) of a liquid in the limit of zero shear rate (i.e., when the fluid it is at rest). Therefore it is not the result of a direct measure but a calculus or interpolation from experimental results at the lower shear rates values. The most important thing is its physical meaning. It represents the ability of the material to avoid sedimentation when storage. A high zero shear viscosity is interpreted as a the material will show homogeneous during long storage.
What is the oil viscocity?
The viscosity of oil is the rate that it flows, and its resistance to shear forces.
What is the viscosity of asphalt?
Viscosity - The ratio between the applied shear stress and the rate of shear is called the coefficient of viscosity.This coefficient is a measure of the resistance to flow of the liquid. It is commonly called the viscosity.The SI unit of viscosity is the Pascal second (Pa•s). Another common unit of viscosity is the centipoise (cP) where 100 cP is equal to 1 Poise (P), and 10 P = 1 Pa•s.
What is a sentence for non-newtonian fluids?
A non-Newtonian fluid is a fluid whose flow properties are not described by a single constant value of viscosity. Many polymer solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup, starch suspensions, paint, blood and shampoo. In a Newtonian fluid, the relation between the shear stress and the strain rate is linear, the constant of proportionality being the coefficient of viscosity. In a non-Newtonian fluid, the relation between the shear stress and the strain rate is nonlinear, and can even be time-dependent. Therefore a constant coefficient of viscosity can not be defined. A ratio between shear stress and rate of strain (or shear-dependent viscosity) can be defined, this concept being more useful for fluids without time-dependent behavior.
Relationship between flow time and viscosity?
The higher the viscosity, the lower the flow rate.
Various drilling mud have the same apparent viscosity at 1022sec-1 but the effective viscosity at other shear rates may vary widely Explain?
Drilling mud is a nonnewtonian fluid. It's a thixotropic fluid and it's apparent viscosity is a function of shear rate and time so at various shear rate and times you will have various viscosities. The molecular structure of these fluids breaks during tention.For further informations you can refer to rheology or fluid mechanics books.
What is the difference between thixotropic materials and pseudoplastic fluids?
While both adjectives describe a fluid with a decreasing viscosity, thixotropic materials exhibit this change as a result of time (under constant shear) while pseudoplastic materials exhibit this change as a result of increasing the rate of shear stress.
Newton's law for flow of biological fluids?
What is Viscosity of the Fluid?Viscosity is very important property of the fluids. While considering the fluid for various applications it is crucial to consider the viscosity of the fluid. The fluid flows in the form of various layers as shown in figure below. The top layer of the fluid flows at higher speeds, while the layers below it move at slightly lesser speed. Thus the layers of the fluid offer resistance to the flow of the adjoining layers. This property of the fluid is called as the viscosity of the fluid. Viscosity of the fluid is defined as the property of the fluid that tends to resist the movement of one layer of the fluid over adjacent layer of the fluid.Derivation of Viscosity Formula from Newton's Law of ViscosityIn the figure shown above, let us consider two layers separated by small distance dy. Let us suppose that the velocity of the lower layer is u, so the velocity of the upper layer will be u+du, where du is the small incremental velocity. Now, the top layer tends to offer resistance to the flow of bottom layer and bottom layer offers resistance to the flow of top layer. The resistance to the flow is offered in the form of shear stress. Thus the adjoining layers of the fluid cause shear stress on the adjoining layers. The shear stress among the various layers of the fluid depends on rate of change of the velocity of the fluid with respect to its distance 'y' from the lowest layer of the fluid. Shear stress is denoted by τ (tau). This is also called as Newton's law of viscosity. It states that shear stress between various layers of the fluid is directly proportional to rate of shear strain.Shear stress τ (tau) is given by: (refer the fig I linked)Here µ (mu) is called as the coefficient of dynamic viscosity or merely viscosity. The term du/dy is the rate of shear strain or rate of shear deformation or velocity gradient. Thus viscosity is also defined as the shear stress required to produce unit rate of shear strain.Read more at the link below.
What viscosity level was the fluid flow rate the highest?
The relationship between radius and fluid flow rate is inversely proportional. As radius goes down, fluid flow rate goes up. The highest fluid flow rate will be at the lowest radius.
How are viscosity and flow rate related?
viscosity is inversely proportional to the flow rate. the actual formula is complex , but higher the viscosity slower will be the flow rate. honey flows slowly and air flows freely because of the above reason.viscosity is also essential,otherwise we would have never been able to use an ink pen.viscosity makes the ink to flow on paper
What is the difference between Newtonian and non-Newtonian fluid?
Water is an example of a Newtonian fluid. Non-Newtonian fluids include catsup, paint, liquid detergent, liquid polymers and a variety of other liquids. In a Newtonian fluid, the relation between the shear stress and the strain rate is linear, the constant of proportionality being the coefficient of viscosity. In simple terms, the size of the drops is directly related to the thickness of the fluid, all else being equal. In a non-Newtonian fluid, the relation between the shear stress and the strain rate is nonlinear, and can even be time-dependent. Therefore a constant coefficient of viscosity can not be defined. Multi-viscosity motor oil, which changes viscosity with temperature, is a common example. Newtonian fluids obey Newton's laws.but non Newtonian fluids does not obey Newton's laws.
