应《网络安全法》要求，自2017年10月1日起，未进行实名认证将不得使用互联网跟帖服务。为保障您的帐号能够正常使用，请尽快对帐号进行手机号验证，感谢您的理解与支持！

24小时热门版块排行榜    

小木虫论坛-学术科研互动平台 » 科研生活区 » 专业外语 » 艺术管理 » "mean velocity" and "average velocity"？
52/1返回列表
查看: 1913  |  回复: 18
只看楼主 @他人 存档 新回复提醒 (忽略) 收藏    在APP中查看
当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖

不锈蝙蝠

金虫 (正式写手)

懵懂者

[求助] "mean velocity" and "average velocity"？ 已有2人参与

Numerous terminologies containing "velocity" exist in Flow Dynamics/Mechanics, among which, one term seems often so similar to another that I could not understand it accurately enough.
As an example, both "mean velocity (distribution)" and "everage velocity" were used in an english reference I'm reading, but with different symbols.
So my question is: what exactly is the difference between these two term? Does "mean velocity" equals to "time-average velocity", as there is a "distribution" following, while "average velocity" means "section-average velocity" which equals to Q/A?

Notes:
1. You are appreciated to answer this post in English.
2. You are greatly appreciated to point out the language erros in my description above.
回复此楼

» 猜你喜欢
makefulluseofmylife.
1楼 2013-08-19 10:50:57
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

apollo911

木虫 (正式写手)

【答案】应助回帖

引用回帖:
12楼: Originally posted by 不锈蝙蝠 at 2013-08-23 21:59:50
In the paper I read, the "mean velocity" has a distribution along with y-axis which stands for the water depth from the river bed, while the "average velocity" was explained as & ...

‘total discharge divided by the cross-section's area’  I think this defination should be better.
赞一下 回复此楼
13楼2013-08-23 23:34:29
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 19 个回答

不锈蝙蝠

金虫 (正式写手)

懵懂者
zhtear99: 回帖置顶 2013-08-23 21:37:25
问题大意：流体动力学中有很多包含“Velocity”的术语，有些相近不易辨别。
最近读文献，同时出现“mean velocity (distribution)”和“average velocity”，且用不同符号表示。
想问一下是否前者是指“时均流速（分布）”而后者则是“断面平均流速”的意思？
赞一下 回复此楼
makefulluseofmylife.
3楼2013-08-23 10:45:30
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

liulion2008

木虫 (小有名气)

【答案】应助回帖

Numerous terminologies containing "velocity" exist in Flow Dynamics/Mechanics, among which, one term seems often so similar to another that I could not understand it accurately enough.
赞一下 回复此楼
5楼2013-08-23 11:23:34
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

liulion2008

木虫 (小有名气)

【答案】应助回帖

Numerous terminologies containing "velocity" exist in Flow Dynamics/Mechanics, among which, one term seems often so similar to another that I could not understand it accurately enough. 流体动力学专业名词中有太多词语中使用了“速率”这个词语，这些词语的相似程度比较高，我不能很准确的理解这些词语。
赞一下 回复此楼
6楼2013-08-23 11:25:41
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 19 个回答
普通表情 龙 兔 虎 猫
信息提示
关闭
请填处理意见
关闭