Magnetohydrodynamics and Fluid Dynamics: Action Principles and Conservation Laws

The book delves into conservation laws across magnetohydrodynamics, gasdynamics, and hydrodynamics, emphasizing their critical role in fusion, space plasmas, and geophysical fluid dynamics. It highlights how these laws can be utilized to test numerical codes and uncover new physical insights, such as tracing the time history of fluid elements to enhance the understanding of fluid vorticity and the stability of steady flows.