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单词 Critical Rayleigh Number
释义

Critical Rayleigh Number

中文百科

瑞利数 Rayleigh number

(重定向自Critical Rayleigh Number)

瑞利数(Rayleigh number),是流体力学中的无量纲数,指自然对流和扩散热量、质量传递之比,计算式为:

其中:

英语百科

Rayleigh number 瑞利数

(重定向自Critical Rayleigh Number)

In fluid mechanics, the Rayleigh number (Ra) for a fluid is a dimensionless number associated with buoyancy-driven flow, also known as free convection or natural convection. When the Rayleigh number is below a critical value for that fluid, heat transfer is primarily in the form of conduction; when it exceeds the critical value, heat transfer is primarily in the form of convection.

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更新时间:2025/6/20 23:04:57