Water has a dynamic viscosity of 8.90 104 Pa.s.
The fluid's effective viscosity and average fluid velocity are equivalent. During fluid flow through the circular capillary, both change spatially.
The effective viscosity value is a single representative viscosity value for fluid flow under a certain set of conditions, much like the average velocity value. viscosity is the ability of a fluid (liquid or gas) to resist changing its shape or allowing nearby parts to move in relation to one another. Viscosity is a sign of flow resistance.
The fluidity, a metric indicating the ease of flow, is the reciprocal of viscosity. For instance, molasses is more viscous than water.
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