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A two-component transport model for solar wind fluctuations: Waves plus quasi-2D turbulence

Abstract
We present a model for the transport of solar wind fluctuations, based on the assumption that they can be well-represented using two distinct components: a quasi-2D turbulence piece and a wave-like piece. For each component, coupled transport equations for its energy, cross helicity, and characteristic lengthscale(s) are derived, along with an equation for the proton temperature. This energy-containing “two-component” model includes the effects of solar wind expansion and advection, driving by stream shear and pickup ions, and nonlinear cascades. Nonlinear effects are modeled using a recently developed one-point phenomenology for such a two-component model of homogeneous MHD turbulence [1]. Heating due to these nonlinear effects is included in the temperature equation. Numerical solutions are discussed and compared with observations
Type
Journal Article
Type of thesis
Series
Citation
Oughton, S., Matthaeus, W.H., Smith, C.W. & Breech, B. (2010). A two-component transport model for solar wind fluctuations: Waves plus quasi-2D turbulence. AIP Conference Proceedings, 1216(1), 210-213.
Date
2010
Publisher
AIP, Melville, New York
Degree
Supervisors
Rights
© 2010 American Institute of Physics.