Uri Shumlak

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The multi-fluid plasma model only assumes local thermodynamic equilibrium within each fluid, e.g. ion and electron fluids for the two-fluid plasma model. Derivation of the MHD model involves several asymptotic and simplifying assumptions that can limit its applicability. Therefore, the two-fluid plasma model more accurately represents the appropriate(More)
A discontinuous Galerkin method for the full two-fluid plasma model is described. The plasma model includes complete electron and ion fluids, which allows charge separation, separate electron and ion temperatures and velocities. Complete Maxwell's equations are used including displacement current. The algorithm is validated by benchmarking against existing(More)
Algorithms for the solution of the five-moment ideal Two-Fluid equations are presented. The ideal Two-Fluid model is more general than the often used magnetohydrodynamic (MHD) model. The model takes into account electron inertia effects, charge separation and the full electromagnetic field equations and allows for separate electron and ion motion. The(More)
Keywords: Field reversed configuration (FRC) Single fluid magnetohydrodynamics (MHD) Quasi-static magnetic field Artificial boundary condition (ABC) The method of difference potentials Calderon's potentials and projections Boundary equations with projections a b s t r a c t Confining dense plasma in a field reversed configuration (FRC) is considered a(More)
a r t i c l e i n f o a b s t r a c t This paper describes a study of the effects of the overall spatial resolution, polynomial degree and computational grid directionality on the accuracy of numerical solutions of a highly anisotropic thermal diffusion equation using the spectral element spatial discretization method. The high-order spectral element(More)
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