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Viscosity is a measure of a fluid’s resistance to flow. The SI unit of viscosity is poiseiulle (PI). Its other units are newton-second per square metre (N s m -2) or pascal-second (Pa s.) The dimensional formula of viscosity is [ML -1 T -1].
Oct 23, 2024 · viscosity, resistance of a fluid (liquid or gas) to a change in shape, or movement of neighbouring portions relative to one another. Viscosity denotes opposition to flow. The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. Molasses, for example, has a greater viscosity than water.
Oct 18, 2024 · Viscosity is a physical quantity that describes a fluid’s resistance to flow. It is a property that resists the relative displacement of the different layers of the fluid. It can be considered as the fluid friction occurring inside the fluid due to the internal friction between the molecules.
Viscosity is the material property which relates the viscous stresses in a material to the rate of change of a deformation (the strain rate). Although it applies to general flows, it is easy to visualize and define in a simple shearing flow, such as a planar Couette flow.
Aug 3, 2021 · By definition, viscosity is a fluid’s resistance to flow or deformation. A fluid with a high viscosity, such as honey, flows as a slower rate than a less viscous fluid, such as water. The word “viscosity” comes from the Latin word for mistletoe, viscum. Mistletoe berries yield a viscous glue, also called viscum.
Viscosity is the force of friction which one part of the liquid offers to another part of the liquid. The force of friction f between two layers each having area A sq cm, separated by a distance dx cm, and having a velocity difference of dv cm/sec, is given by: f ∝ A ( dv / dx ) f = η A ( dv/dx)
In fluid mechanics, viscosity is defined as the measure of a fluid’s resistance to fluid flow under an applied force. It can be intuitively understood as the “thickness” or “stickiness” of a fluid. For a fluid in motion, viscosity describes internal friction.
VISCOSITY definition: 1. the quality or state of being viscous (= thick and sticky and not flowing easily): 2. the…. Learn more.
The meaning of VISCOSITY is the quality or state of being viscous : a sticky or glutinous consistency. How to use viscosity in a sentence.
Informally, viscosity is the quantity that describes a fluid's resistance to flow. Formally, viscosity is the ratio of shearing stress to velocity gradient.
