2010/05/21 by Asher Yahalom, Yahalom, Asher
Biochemistry, Genetics and Molecular Biology · Mathematics · Physics and Astronomy · #FOS: Physical sciences #Geomagnetism and Paleomagnetism Studies #Magnetic confinement fusion research #Mathematical Physics (math-ph) #Plasma Physics (physics.plasm-ph) #Quantum Physics (quant-ph) #Solar and Space Plasma Dynamics #Solar and Stellar Astrophysics (astro-ph.SR) #astro-ph.SR #math-ph #math.MP #physics.plasm-ph #quant-ph
paper · pdf · doi:10.48550/arxiv.1005.3977
10 pages, 3 figures, submitted to MMT 2010
arxiv created 2010/05/21 · openalex publication_date 2010/05/21 · arxiv updated 2010/05/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Variational principles for magnetohydrodynamics were introduced by previous authors both in Lagrangian and Eulerian form. In previous works [1] Yahalom & Lynden-Bell and later Yahalom [2] introduced a simpler Eulerian variational principle from which all the relevant equations of Magnetohydrodynamics can be derived. The variational principles were given in terms of four independent functions for non-stationary flows and three independent functions for stationary flows. This is less than the seven variables which appear in the standard equations of magnetohydrodynamics which are the magnetic field, the velocity field and the density . In the case that the magnetohydrodynamic flow has a non trivial topology such as when the magnetic lines are knotted or magnetic and stream lines are knotted, some of the functions appearing in the Lagrangian are non-single valued. Those functions play the same rule as the phase in the Aharonov-Bohm celebrated effect [3].