24小时热门版块排行榜    

查看: 2457  |  回复: 18
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

» 本主题相关价值贴推荐,对您同样有帮助:

makefulluseofmylife.
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.
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
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?
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. 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。
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

liulion2008

木虫 (小有名气)

【答案】应助回帖

As an example, both "mean velocity (distribution)" and "everage velocity" were used in an english reference I'm reading, but with different symbols.例如,我正在阅读的"mean velocity (distribution)" 和"everage velocity",它们的英语表述意思应当相同,而在文章中却用了不同的符号表示(Q/A)。
7楼2013-08-23 11:29:35
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +4 czAiolzR0IJC 2026-11-10 4/200 2026-11-11 12:14 by gRND4NVAZ8VG
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 czAiolzR0IJC 2026-11-10 3/150 2026-11-11 12:05 by gRND4NVAZ8VG
[教师之家] 售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急 +3 C6CRn66RYYXS 2026-11-10 3/150 2026-11-11 11:41 by gRND4NVAZ8VG
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 C6CRn66RYYXS 2026-11-10 3/150 2026-11-11 11:38 by gRND4NVAZ8VG
[考博] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +3 YHiw1gou1Eda 2026-11-10 3/150 2026-11-11 11:10 by 1Nb0IVlmV6v0
[考研] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +3 FChKX8meu1ds 2026-11-09 4/200 2026-11-11 10:54 by 1Nb0IVlmV6v0
[教师之家] 售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急 +3 FChKX8meu1ds 2026-11-09 5/250 2026-11-11 10:46 by 1Nb0IVlmV6v0
[硕博家园] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +4 FChKX8meu1ds 2026-11-09 5/250 2026-11-11 10:35 by 1Nb0IVlmV6v0
[基金申请] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +4 zSbvVX9JFl9J 2026-11-09 5/250 2026-11-11 10:10 by 1Nb0IVlmV6v0
[教师之家] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +5 zSbvVX9JFl9J 2026-11-09 7/350 2026-11-11 10:04 by 1Nb0IVlmV6v0
[硕博家园] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +4 ttH3f1oA6ace 2026-11-04 10/500 2026-11-11 09:20 by Equinoxhua
[考研] 售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急 +5 ttH3f1oA6ace 2026-11-04 11/550 2026-11-11 08:54 by Equinoxhua
[公派出国] 售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急 +4 FChKX8meu1ds 2026-11-09 9/450 2026-11-11 04:54 by Z7qfCsdIiD1T
[考博] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +3 FChKX8meu1ds 2026-11-09 5/250 2026-11-11 04:40 by Z7qfCsdIiD1T
[教师之家] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +3 FChKX8meu1ds 2026-11-09 6/300 2026-11-11 04:32 by Z7qfCsdIiD1T
[考研] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +3 FChKX8meu1ds 2026-11-09 5/250 2026-11-11 04:29 by Z7qfCsdIiD1T
[公派出国] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +4 FChKX8meu1ds 2026-11-09 6/300 2026-11-11 01:54 by Z7qfCsdIiD1T
[教师之家] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +3 FChKX8meu1ds 2026-11-09 6/300 2026-11-11 01:32 by Z7qfCsdIiD1T
[考博] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +5 kvewwGtKktqB 2026-11-04 12/600 2026-11-09 13:26 by Equinoxhua
[硕博家园] 售SCI一区文章,我:8O5.5.1.O5.4,科目全,可伽急 +4 5sJFDKp2kwuI 2026-11-06 10/500 2026-11-09 08:00 by IhnEQauGmT3K
信息提示
请填处理意见