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:
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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