NIFS-154

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Author(s): J. Todoroki Title: On the Lagrangian of the Linearized MHD Equations Date of publication: June 1992 Key words: Lagrangian, linearized MHD equation, resistive MHD Abstract: Lagrangian for the linearized, ideal and resistive, MHD equations is discussed, by introducing the perturbation of the total pressure. In the resistive MHD equations, the Lagrangian is expressed in terms of the electric displacement vector (time integral of the electric current) as well as the plasma displacement. The NOVA and NOVA-R formulation can be derived by using the obtained Lagrangian.

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