网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Reech Number
释义

Reech Number

中文百科

福禄数 Froude number

(重定向自Reech Number)

福禄数Froude number,Fr)为流体力学中无量纲的纯量,为惯性力和重力效应之比,公式如下:

式中U为流体速度,L为物体特征长度,g为重力加速度。

明渠流和波浪力学中都常用到福禄数。在明渠流中,长度L为水深h。在波浪力学中,福禄数代表平均流速与重力波的波速之比。

英语百科

Froude number 福禄数

(重定向自Reech Number)
The hulls of swan (above) and raven (below). A sequence of 3, 6, and 12 (shown in the picture) foot scale models were constructed by Froude and used in towing trials to establish resistance and scaling laws.

In continuum mechanics, the Froude number (Fr) is a dimensionless number defined as the ratio of the flow inertia to the external field (the latter in many applications simply due to gravity). Named after William Froude (/ˈfrd/;), the Froude number is based on the speed–length ratio as defined by him, and is defined as:

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/20 6:28:18