Role of density modulation in driving nonlinear streamer flows in drift wave turbulence

Y. Kosuga; K. Hasamada

doi:10.1063/1.5049726

Role of density modulation in driving nonlinear streamer flows in drift wave turbulence

Y. Kosuga, K. Hasamada

Division of Nuclear Fusion Dynamics

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6 Citations (Scopus)

Abstract

The role of density modulation in driving streamer flows in drift wave turbulence is discussed. In contrast to the conventional shearing mechanism, we emphasize the impact of frequency modulation by meso-scale density perturbation. This mechanism is more effective for streamers than for zonal flows. The Reynolds stress and nonlinear growth rate are calculated. The result indicates that the streamer growth is enhanced due to the density modulation. Implications on the selection of streamers and zonal flows are discussed as well.

Original language	English
Article number	100701
Journal	Physics of Plasmas
Volume	25
Issue number	10
DOIs	https://doi.org/10.1063/1.5049726
Publication status	Published - Oct 1 2018

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All Science Journal Classification (ASJC) codes

Condensed Matter Physics

Cite this

Kosuga, Y., & Hasamada, K. (2018). Role of density modulation in driving nonlinear streamer flows in drift wave turbulence. Physics of Plasmas, 25(10), [100701]. https://doi.org/10.1063/1.5049726

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10.1063/1.5049726