【Daily Question】Principles of Chemical Engineering 582: Newton’s Law of Viscosity (July 4)
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This post was last edited by Zaihui Kangqiao on 2017-7-4 at 09:58. The Chemical Engineering Theory section is launching a \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge in chemical engineering. Subsequent campaigns will cover topics such as \"Chemical Engineering Principles,\" \"Mass Transfer and Separation,\" \"Chemical Engineering Thermodynamics,\" and \"Chemical Engineering Processes.\" We hope you will give it your active support~~~ Replies to the \"One Question per Day\" campaign can be viewed directly; the thread will be closed after 1 day! ! To encourage everyone’s continued participation this year! Participation earns 3 wealth points, with an additional 4 wealth points for correct answers~~~ Short answer: The formula for Newton’s law of viscosity is ＿＿＿＿＿＿＿＿, and the physical meaning of its coefficient of viscosity (viscosity) is ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿. τ = F/A = μd.u/dy ； The internal friction force between fluid layers per unit contact area when the velocity gradient is 1.
τ = F/A = μ dw/dy； The internal friction force caused by the viscosity of the fluid per unit area of contact, when the velocity gradient is 1.
τ = F/A = μ d.u/dy; the internal friction force between fluid layers per unit contact area when the velocity gradient is 1.
τ = F/A = μd.u/dy is the internal friction force between fluid layers per unit contact area, when the velocity gradient is 1.
F=μ*A*du/dy. The internal friction force in a liquid is also known as the viscous force. The property that gives rise to fluid flow is called viscosity, and the physical quantity that measures the degree of viscosity is known as viscosity. The viscosity of a liquid is the internal friction resulting from the cohesive forces between the molecules that make up the liquid, which act to prevent relative movement of those molecules. Viscosity appears in a liquid only when it is flowing or has a tendency to flow. This internal friction can only slow down the flow of the liquid, but it cannot stop it, which is different from solid friction.
F=μ*A*du/dy. The internal friction force in a liquid is also known as the viscous force. The property that gives rise to fluid flow is called viscosity, and the physical quantity that measures the degree of viscosity is known as viscosity. The viscosity of a liquid is the internal friction resulting from the cohesive forces between the molecules that make up the liquid, which act to prevent relative movement of those molecules. Viscosity appears in a liquid only when it is flowing or has a tendency to flow. This internal friction can only slow down the flow of the liquid, but it cannot stop it, which is different from solid friction.
Newton’s law of viscosity is expressed as F=IU*du/dy. The physical meaning of the viscosity coefficient is the force of interaction that exists between adjacent fluid layers with different velocities during flow _
Newton’s law of viscosity is expressed as F=IU*du/dy. The physical meaning of the viscosity coefficient is the force of interaction that exists between adjacent fluid layers with different velocities during flow _
τ = F/A = μd.u/dy； The internal friction force between fluid layers per unit contact area when the velocity gradient is 1.
Newton’s law of viscosity: τ=μ×du/dy
F’ = μ Adu/dy; τ = μ du/dy 10