Difference between revisions of "Scaling laws by degree of knownness"
From apm
(→Very widely known: added note on limited details) |
(→Somewhat known: Twice the frequency of half sized machinery) |
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* [[Thousandfold lower mass of tenfold smaller machinery]] | * [[Thousandfold lower mass of tenfold smaller machinery]] | ||
* [[Twice the frequency of half sized machinery]] | * [[Twice the frequency of half sized machinery]] | ||
| − | + | ||
| + | == Somewhat known == | ||
| + | |||
More details here: | More details here: | ||
| − | * [[Same absolute speeds for smaller machinery]] | + | * [[Same absolute speeds for smaller machinery]] <br> Usually formulated indirectly by stating that machine frequencies rise linearly with falling size. <br> This one is basically equivalent: [[Twice the frequency of half sized machinery]] |
| + | Not a size but a speed scaling law: | ||
| + | * [[Hundredfold smaller frictionlosses from tenfold slowdown]] <br> There might still be dissipation mechanisms that scale differently. <br>See: [[Accidental heatpump bearing]] | ||
== Very poorly known (but very important) == | == Very poorly known (but very important) == | ||
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* [[Same relative deflections across scales]] | * [[Same relative deflections across scales]] | ||
---- | ---- | ||
| + | Less relevant but a bit flabbergasting: | ||
* [[Lower stiffness of smaller machinery]] | * [[Lower stiffness of smaller machinery]] | ||
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(It's a word: https://en.wiktionary.org/wiki/knownness) | (It's a word: https://en.wiktionary.org/wiki/knownness) | ||
| + | |||
| + | [[Category:Scaling law]] | ||
Latest revision as of 17:27, 15 August 2023
Contents
Very widely known
ATM barely any descriptions on the listed pages here. Most is on page: Scaling law.
I advise visiting any of the countless sources on the web for details.
- Twice the surface area of half the volume
- Thousandfold lower mass of tenfold smaller machinery
- Twice the frequency of half sized machinery
Somewhat known
More details here:
- Same absolute speeds for smaller machinery
Usually formulated indirectly by stating that machine frequencies rise linearly with falling size.
This one is basically equivalent: Twice the frequency of half sized machinery
Not a size but a speed scaling law:
- Hundredfold smaller frictionlosses from tenfold slowdown
There might still be dissipation mechanisms that scale differently.
See: Accidental heatpump bearing
Very poorly known (but very important)
Less relevant but a bit flabbergasting:
External links
(It's a word: https://en.wiktionary.org/wiki/knownness)
