Conversion of plasma energy into electrical pulse by magnetic flux compression

An Eulerian MHD model for the analysis of magnetic flux compression by expanding diamagnetic fusion plasma sphere

“…The process of magnetic flux compression (MFC) inside an electrically conducting surface by expanding diamagnetic inertial fusion plasma sphere (from fusion micro-explosions) and its application as a direct energy conversion scheme to convert a part of plasma kinetic energy into pulsed electrical energy is reported in our recent work [1]. Similar works can be found in Refs.…”

“…Also, in Refs. [1,7,8] an elongation of plasma blob in the axial direction is observed. These effects, collectively, lead to a non-spherical expansion of the plasma with large deformations.…”

“…In our earlier work [1], a Lagrangian computational method with a filamentary model [1,12,13] self-consistently coupled with external circuit equations (for magnetic field update) is used. It is observed that during the final stage of MFC, the plasma dynamics becomes distorted due to non-uniform deceleration caused by the magnetic field outside the plasma sphere.…”

“…Therefore, an Eulerian (Lagrangian plus remap to initial mesh) magneto-hydrodynamic (MHD) model is developed to overcome the limitations of the computational model described in Ref. [1].…”

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a b s t r a c tThe process of magnetic flux compression (MFC) inside a solenoid by expanding diamagnetic plasma sphere produced by an inertial fusion micro-explosions and its application as a direct energy conversion scheme to convert a part of plasma kinetic energy into pulsed electrical energy has been recently reported [1]. For a detailed analysis of this concept, an Eulerian multi-material MHD model is developed using magnetic vector potential formulation for electro-magnetic field calculations and classical volumeof-fluid method for material interface tracking.

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