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#flame

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Nicole Sharp

Visualizing Unstable Flames

Inside a combustion chamber, temperature fluctuations can cause sound waves that also disrupt the flow, in turn. This is called a thermoacoustic instability. In this video, researchers explore this process by watching how flames move down a tube. The flame fronts begin in an even curve that flattens out and then develops waves like those on a vibrating pool. Those waves grow bigger and bigger until the flame goes completely turbulent. Visually, it’s mesmerizing. Mathematically, it’s a lovely example of parametric resonance, where the flame’s instability is fed by system’s natural harmonics. (Video and image credit: J. Delfin et al.; research credit: J. Delfin et al. 1, 2)

#2024gofm#combustion#combustionInstability
NicoRey (Forj)

#introduction
Bonjour je n'avais pas fait d'introduction, la voici :
J'exerce 2 activités,
1) depuis 1986 je travaille dans les #vfx où j'ai fait #3d, #compositing, #flame, #supervisionVFX, tournages, python, #pipeline architect.
2) en 2007 j'ai commencé la forge, j'ai suivi des stages, en 2019 j'ai fait un cap de ferronnerie d'art. Je fait #couteaux et #outils. 2020 formation de soudeur.
Je n'utilise des outils électriques qu'une fois que je sais le faire à la main façon old-school.

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