Laminar flow, sometimes known as streamline flow, occurs when a fluid flows in parallel layers, with no disruption between the layers. In fluid dynamics, laminar flow is a flow regime characterized by high momentum diffusion, low momentum convection, pressure and velocity independent from time. It is the opposite of turbulent flow. In nonscientific terms laminar flow is "smooth," while turbulent flow is "rough."

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Fluid flow occurring in parallel layers without mixing between the layers, experimentally found for Reynolds numbers < 2000

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Smooth and regular fluid flow. Opposite of turbulence

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