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

      Oughton, Sean; Matthaeus, William H.; Smith, Charles W.; Breech, Ben
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      Oughton_ A two-component.pdf
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      DOI
       10.1063/1.3395839
      Link
       link.aip.org
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      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.
      Permanent Research Commons link: https://hdl.handle.net/10289/4627
      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
      Date
      2010
      Type
      Journal Article
      Publisher
      AIP, Melville, New York
      Rights
      © 2010 American Institute of Physics.
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      • Computing and Mathematical Sciences Papers [1455]
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