Die Enstrophie einer Strömung ist wie folgt definiert, wobei
ist das Wirbelfeld
Enstrophie wird nur in 2 Dimensionen gesprochen. Dies liegt daran, dass der Vortrex-Dehnungsterm
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/BoldItalic/336/03C9.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/22C5.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/2207.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Bold/336/0075.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/003D.png?V=2.7.5)
erst im 2d. In 3D kann es verwendet werden, um die Enstrophie des Flusses zu sprengen oder zu verringern.
Wir lesen die Erhaltung der Enstrophie wie folgt
Die Erhaltung der Enstrophie ist ein Ergebnis der Schiefsymmetrie im Konvektionsoperator
in seiner trilinearen Form wie folgt
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0063.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0028.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0028.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0075.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0076.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0029.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0077.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0029.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/003D.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/2212.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0063.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0028.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0028.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0075.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0077.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0029.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0076.png?V=2.7.5)
Dies liegt daran, dass in der vollständigen Gleichung für die Entwicklung der Enstrophie der trilineare Term in 2d verschwindet.
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/2202.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/2202.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0074.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Size2/Regular/336/222C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/BoldItalic/336/03C9.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/238/0032.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0032.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0064.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Bold/336/0053.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/003D.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/2212.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/2207.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/BoldItalic/336/03C9.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/238/0032.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0052.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0065.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002B.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/Italic/336/0063.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0028.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0028.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/BoldItalic/336/03C9.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/BoldItalic/336/0075.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/0029.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Main/Regular/336/002C.png?V=2.7.5)
![](https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/fonts/HTML-CSS/TeX/png/Math/BoldItalic/336/03C9.png?V=2.7.5)
Was sicherstellt, dass in 2d die Entropie einer Strömung erhalten bleibt.