Hydrodynamical helicity
id:
hydrodynamical-helicity-214-395217
title:
Hydrodynamical helicity
text:
In fluid dynamics, helicity is, under appropriate conditions, an invariant of the Euler equations of fluid flow, having a topological interpretation as a measure of linkage and/or knottedness of vortex lines in the flow. This was first proved by Jean-Jacques Moreau in 1961 and Moffatt derived it in 1969 without the knowledge of Moreau's paper. This helicity invariant is an extension of Woltjer's theorem for magnetic helicity. Let u be the velocity field and ∇ × u the corresponding vorticity fiel
brand slug:
wiki
category slug:
encyclopedia
description:
Aspect of Eulerian fluid dynamics
original url:
https://en.wikipedia.org/wiki/Hydrodynamical_helicity
date created:
2004-10-19T12:38:31Z
date modified:
2024-09-12T11:50:14Z
main entity:
{"identifier":"Q3097928","url":"https://www.wikidata.org/entity/Q3097928"}
image:
fields total:
13
integrity:
15