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approvedzhu_sherwood2018_poster.pdf2018-05-02 16:26:01Hongxuan Zhu
approvedabstract_v2.pdf2018-04-17 10:30:17Hongxuan Zhu


Author: Hongxuan Zhu
Requested Type: Pre-Selected Invited
Submitted: 2018-02-28 09:14:53

Co-authors: Yao Zhou, D. E. Ruiz, I. Y. Dodin

Contact Info:
Princeton University
Princeton Plasma Physics Labor
Princeton, NJ   08540
United States

Abstract Text:
Inhomogeneous drift-wave turbulence can be modeled as an effective plasma where drift waves act as quantumlike particles and the zonal-flow velocity serves as a collective field through which they interact. We report the first Wigner-Moyal simulations of this effective plasma (within the generalized Hasegawa-Mima model), i.e., kinetic simulations of the ray phase-space dynamics with full-wave effects retained. We demonstrate how the quantumlike approach facilitates calculations and analysis of the zonal-flow formation and deterioration, including the predator-prey oscillations and the emergence of the Rayleigh-Kuo criterion. We also show that the traditional wave kinetic equation, which has been used in literature for a long time, misses essential physics and is, in fact, insufficient for modeling of these effects (arXiv:1712.08262).

***This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, and by Sandia National Laboratories. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U. S. DOE NNSA under contract DE-NA-0003525.