Engineering

Número de Reynolds

Definición

El número de Reynolds es una magnitud adimensional que predice si el flujo de un fluido será laminar o turbulento, definido como Re = ρvL/μ (densidad × velocidad × longitud / viscosidad dinámica).

Explicación

Developed by Osborne Reynolds in 1883, it remains a cornerstone of fluid dynamics. Flow with Re below ~2,300 in a pipe is typically laminar and smooth; above ~4,000, it becomes turbulent and chaotic. Engineers use it to scale wind tunnel models: a small model at high velocity can replicate the same flow behavior as a full-sized aircraft.

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