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Magnetohydrodynamics and Fluid Dynamics: Action Principles and Conservation Laws

Magnetohydrodynamics and Fluid Dynamics: Action Principles and Conservation Laws

Paperback

Series: Lecture Notes in Physics, Book 946

Physics

ISBN10: 3319725106
ISBN13: 9783319725109
Publisher: Springer Nature
Published: Feb 6 2018
Pages: 301
Weight: 0.98
Height: 0.66 Width: 6.14 Depth: 9.21
Language: English
This text focuses on conservation laws in magnetohydrodynamics, gasdynamics and hydrodynamics. A grasp of new conservation laws is essential in fusion and space plasmas, as well as in geophysical fluid dynamics; they can be used to test numerical codes, or to reveal new aspects of the underlying physics, e.g., by identifying the time history of the fluid elements as an important key to understanding fluid vorticity or in investigating the stability of steady flows.

The ten Galilean Lie point symmetries of the fundamental action discussed in this book give rise to the conservation of energy, momentum, angular momentum and center of mass conservation laws via Noether's first theorem. The advected invariants are related to fluid relabeling symmetries - so-called diffeomorphisms associated with the Lagrangian map - and are obtained by applying the Euler-Poincare approach to Noether's second theorem.

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