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单词 Reynold number
释义

Reynold number

中文百科

雷诺数 Reynolds number

（重定向自Reynold number）
穆迪图说明达西摩擦因子f和雷诺数和相对粗糙度的关系
Una calle de vórtices alrededor de un cilindro. Esto ocurre alrededor de los cilindros, para cualquier fluido, tamaño del cilindro y velocidad de fluido, siempre que tenga un número de Reynolds de entre ~ 40 y 10³.[1]
The plume from this candle flame goes from laminar to turbulent. The Reynolds number can be used to predict where this transition will take place.
Sir George Stokes, introduced Reynolds numbers

流体力学中，雷诺数（Reynolds number）是流体惯性力\frac{\rho v^2}{L}与黏性力\frac{\mu v}{L^2}比值的量度，它是一个无量纲量。

雷诺数较小时，黏滞力对流场的影响大于惯性力，流场中流速的扰动会因黏滞力而衰减，流体流动稳定，为层流；反之，若雷诺数较大时，惯性力对流场的影响大于黏滞力，流体流动较不稳定，流速的微小变化容易发展、增强，形成紊乱、不规则的紊流流场。

英语百科

Reynolds number 雷诺数

（重定向自Reynold number）
The plume from this candle flame goes from laminar to turbulent. The Reynolds number can be used to predict where this transition will take place.
A vortex street around a cylinder. This can occur around cylinders and spheres, for any fluid, cylinder size and fluid speed, provided that the flow has a Reynolds number in the range ~40 to ~1000.[1]
Sir George Stokes, introduced Reynolds numbers
Osborne Reynolds popularised the concept

In fluid mechanics, the Reynolds number (Re) is a dimensionless quantity that is used to help predict similar flow patterns in different fluid flow situations. The concept was introduced by George Gabriel Stokes in 1851, but the Reynolds number is named after Osborne Reynolds (1842–1912), who popularized its use in 1883.
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更新时间：2025/11/20 23:51:14