/sci/ - Science & Math » Thread #12806858

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Anonymous Mon 08 Mar 16:15:44 2021 No.12806858 View Reply Original Report

Quoted By: >>12806865 >>12806914

wtf is a "characteristic length" in fluid mechanics? You guys just use whatever you want it seems. How can that be correct?

Anonymous

Anonymous Mon 08 Mar 2021 16:17:28 No.12806865 Report

Quoted By:

>>12806858
It’s the length of the fluid that is characterized by that fluid.

Anonymous

Anonymous Mon 08 Mar 2021 16:28:15 No.12806914 Report

Quoted By: >>12806996

>>12806858
>How can that be correct?
Because dimensional analysis says so

Anonymous

Anonymous Mon 08 Mar 2021 16:44:48 No.12806996 Report

Quoted By:

>>12806914
if I had a long rectangle, length >> height, how can both length and height be a valid characteristic length if they are so different?

Anonymous

Anonymous Mon 08 Mar 2021 17:29:34 No.12807172 Report

Quoted By:

you're too autist for engineering; stick to math (or physics, if you're not smart enough for math)

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