Force-free field
Webfree field: [noun] a sound-wave field devoid of obstacles causing reflection, refraction, or diffraction. WebMay 12, 2024 · The extrapolated fields reach a stable state, which is as close as possible to an equilibrium state, and satisfy the force-free and divergence-free conditions very well. The magnetic...
Force-free field
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WebForce-free fields have the property that the electric current density associated with the magnetic field is parallel to the field. The governing equations are surprisingly difficult to solve in general, in part because they are nonlinear, and … http://vergil.chemistry.gatech.edu/courses/chem6485/pdf/molmech-lecture.pdf
WebJun 2, 2024 · On the basis of these properties of the force free magnetic flux rope, the problems of plasma instabilities excitation and coronal heating are discussed. (a) Gold-Hoyle field: B 0 = 1, G = 0, S... WebMar 5, 2024 · A force-free magnetic field is a magnetic field in which the Lorentz force is equal to zero and the magnetic pressure greatly exceeds the plasma pressure such that non-magnetic forces can be neglected. …
WebJun 29, 2024 · If we solve a problem with boundary values (BVs) providing a force-free result, the OPTI algorithm (as known from the Low and Lou, 1990, analytic force-free models) generates a non-solenoidal magnetic field component with a magnitude at the level of the overall numerical accuracy of the method. WebFeb 6, 2009 · Abstract: Nonlinear force-free field (NLFFF) models are thought to be viable tools for investigating the structure, dynamics and evolution of the coronae of solar active regions. In a series of NLFFF modeling studies, we have found that NLFFF models are successful in application to analytic test cases, and relatively successful when applied to ...
A force-free magnetic field is a magnetic field in which the Lorentz force is equal to zero and the magnetic pressure greatly exceeds the plasma pressure such that non-magnetic forces can be neglected. For a force-free field, the electric current density is either zero or parallel to the magnetic field. See more When a magnetic field is approximated as force-free, all non-magnetic forces are neglected and the Lorentz force vanishes. For non-magnetic forces to be neglected, it is assumed that the ratio of the plasma pressure to … See more • Low, Boon Chye, "Force-Free Magnetic Fields ". November 2000. See more In the Sun's upper chromosphere and corona, the plasma β can locally be of order 0.01 or lower allowing for the magnetic field to be approximated as force-free. See more • Woltjer's theorem • Chandrasekhar–Kendall function • Magnetic helicity • List of plasma (physics) articles See more
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