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Groups > sci.physics > #533413
| From | jimp@specsol.spam.sux.com |
|---|---|
| Newsgroups | sci.physics |
| Subject | Re: Flow Scaling Problem/Riddle |
| Date | 2015-11-16 00:00 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <quinhc-i6f.ln1@mail.specsol.com> (permalink) |
| References | <pan.2015.11.15.22.30.55@localhost.localdomain> <pan.2015.11.15.23.43.27@localhost.localdomain> |
Fabian Russell <root@localhost.localdomain> wrote: > On Sun, 15 Nov 2015 22:30:49 +0000, Fabian Russell wrote: > >> Hollywood often uses scaled down models to simulate real flow >> situations such as forest fires, volcanoes, ocean tempests, etc. >> >> Can these simulations be easily detected by the human eye >> as fakes? If so, how? >> > > The answer has to do with turbulence. > > Flows such a volcano or a billowing smoke stack are necessarily > turbulent and will manifest an "infinite" cascade of eddy currents > from the very large to the very small. > > A small scale model of the above, however, will only manifest the > larger eddy currents. The smaller eddies will be absent. The > difference in the visible flow appearance should be quite plain > to the eye. I'll try that the next time I watch an old, old, movie made when models were still used for such effects. -- Jim Pennino
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Flow Scaling Problem/Riddle Fabian Russell <root@localhost.localdomain> - 2015-11-15 22:30 +0000
Re: Flow Scaling Problem/Riddle gilber34 <fafa@invalid.com> - 2015-11-15 16:34 -0600
Re: Flow Scaling Problem/Riddle john <johnsefton288@gmail.com> - 2015-11-15 17:08 -0800
Re: Flow Scaling Problem/Riddle gilber34 <fafa@invalid.com> - 2015-11-16 14:22 -0600
Re: Flow Scaling Problem/Riddle jimp@specsol.spam.sux.com - 2015-11-15 23:00 +0000
Re: Flow Scaling Problem/Riddle Fabian Russell <root@localhost.localdomain> - 2015-11-15 23:15 +0000
Re: Flow Scaling Problem/Riddle jimp@specsol.spam.sux.com - 2015-11-15 23:25 +0000
Re: Flow Scaling Problem/Riddle Fabian Russell <root@localhost.localdomain> - 2015-11-15 23:45 +0000
Re: Flow Scaling Problem/Riddle jimp@specsol.spam.sux.com - 2015-11-16 00:00 +0000
Re: Flow Scaling Problem/Riddle Mahipal <mahipal7638@gmail.com> - 2015-11-15 16:12 -0800
Re: Flow Scaling Problem/Riddle Fabian Russell <root@localhost.localdomain> - 2015-11-16 00:27 +0000
Re: Flow Scaling Problem/Riddle Mahipal <mahipal7638@gmail.com> - 2015-11-15 16:45 -0800
Re: Flow Scaling Problem/Riddle Fabian Russell <root@localhost.localdomain> - 2015-11-16 00:54 +0000
Re: Flow Scaling Problem/Riddle john <johnsefton288@gmail.com> - 2015-11-15 17:01 -0800
Re: Flow Scaling Problem/Riddle Mahipal <mahipal7638@gmail.com> - 2015-11-15 17:16 -0800
Re: Flow Scaling Problem/Riddle jimp@specsol.spam.sux.com - 2015-11-16 01:29 +0000
Re: Flow Scaling Problem/Riddle "nuny@bid.nes" <Alien8752@gmail.com> - 2015-11-15 16:48 -0800
Re: Flow Scaling Problem/Riddle noTthaTguY <abu.kuanysh05@gmail.com> - 2015-11-16 13:29 -0800
Re: Flow Scaling Problem/Riddle john <johnsefton288@gmail.com> - 2015-11-16 14:42 -0800
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