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不锈蝙蝠金虫 (正式写手)
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[求助]
"mean velocity" and "average velocity"？ 已有2人参与
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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. |
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16楼2013-12-17 05:47:44
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