File:KH-nestabilita-podzvuk.svg
Original file (SVG file, nominally 1,006 × 188 pixels, file size: 255 KB)
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Summary
[edit]DescriptionKH-nestabilita-podzvuk.svg |
Čeština: Kelvinova-Helmholtzova nestabilita vzniká na rozhraní dvou zón tekutiny (může jít i o různé tekutiny) pohybující se různými rychlostmi. Náhodná malá porucha je zvětšena díky zpětné vazbě způsobené změnou rychlosti v okolí poruchy. Toto je důsledkem Bernoulliovy rovnice, vyjadřující, že součet energií (kinetické, tlakové, potenciální a entalpie) je po proudnici konstantní.
Jedná se o základní hydrodynamickou nestabilitu, neboť vede k turbulizaci smykových oblastí. Navíc podporuje fraktální charakter turbulence tím, že už vytvořené víry opět obsahují smykové oblasti na rozhraní jádra a obálky, které opět mohou podléhat KH nestabilitě. Obrázek byl vytvořen ve vektorovém formátu svg. v programu Inkscape a exportován jako png. |
Date | |
Source | Own work |
Author | KKE-FST-ZCU |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:06, 31 January 2020 | 1,006 × 188 (255 KB) | KKE-FST-ZCU (talk | contribs) | Text převeden na křivky (v původní verzi se ztratila informace o fontu) | |
14:30, 29 January 2020 | 1,006 × 188 (106 KB) | KKE-FST-ZCU (talk | contribs) | Cross-wiki upload from cs.wikipedia.org |
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Width | 284mm |
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Height | 53mm |