Finite-difference multiple fluid solution for source-driven rotation in highly magnetized linear plasma device

Rubin, T.; Kolmes, E. J.; Ochs, I. E.; Mlodik, M. E.; Fisch, N. J.

doi:10.1063/5.0070292

Finite-difference multiple fluid solution for source-driven rotation in highly magnetized linear plasma device

Journal Article · Tue Dec 21 00:00:00 EST 2021 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0070292· OSTI ID:1856191

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Princeton Univ., NJ (United States)

The rotation profile of a magnetized plasma cylinder composed of multiple fluids is investigated analytically, expanding on previous results. The analytic steady-state solution is used as a benchmark for a time-dependent multiple-fluid finite-difference code, MITNS: Multiple-Ion Transport Numerical Solver. Magnetic field evolution is taken into account, both analytically and numerically. Its details are shown to be of importance when particles are allowed out of the domain. MITNS reproduces the asymptotic expansion results for a small parameter $δ<<<1$. For $$\sqrt{m_elm_i} ~ δ << 1$$ , a slightly different regime, dominated by viscosity-induced transport of ions, is found numerically and analytically. Finally, this verification supports the use of this code for more complex time-dependent calculations in the future. Additionally, we derive the angular velocity profile of each species due to radial particle and charge fluxes of various strengths.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: Cornell NNSA; National Science Foundation (NSF); USDOE

Grant/Contract Number:: NA0003764

OSTI ID:: 1856191

Alternate ID(s):: OSTI ID: 1836864

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 28; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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