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Dynamic Viscosity

Glossary Term

Definition and Purpose

Dynamic viscosity, often symbolized by the Greek letter eta ((\eta)), is a measure of a fluid's resistance to flow when an external force is applied. It quantifies the internal friction within the fluid, arising from its molecular makeup, as layers of the fluid move relative to one another. This property is crucial in the design and analysis of systems where fluid flow is involved, such as in pipelines, lubrication, and hydraulic systems. The unit of measurement for dynamic viscosity in the International System of Units (SI) is the Pascal-second (Pa(\cdot)s).


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