Energy spectrum transfer equations of solar wind turbulence

Details Energy spectrum transfer equations of solar wind turbulence Energy spectrum transfer equations of solar wind turbulence

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.conf...38t&link_type=abstract

Peking Univ., International Solar Wind 8 Conference, p. 38

Mathematics

Energy Spectra, Solar Wind, Magnetohydrodynamic Turbulence, Magnetohydrodynamic Waves, Energy Transfer, Wave Equations, Radial Flow, Incompressible Flow, Compressible Flow, Nonlinearity, Statistical Distributions, Helios Project, Voyager Project, Mathematical Models

Scientific paper

The recent studies of transfer equations for solar wind magnetohydrodynamic (MHD) turbulence are reviewed with emphasis on the comparison with the statistical observational results. Helios and Voyager missions provide an opportunity to study the the radial evolution of the power spectrum. the cross-helicity the Alfven ratio and the minimum variance direction. Spectrum transfer equations are considered as a tool to explore the nature of this radial evolution of the fluctuations. The transfer equations are derived from incompressible MHD equations. Generally one needs to make assumptions about the nature of the fluctuations and the nature of the turbulent non-linear interactions to obtain numerical results which can be compared with the observations. Some special model results for several simple cases SUCH as for structures or strong mixing. for Alfven waves with weak turbulent interactions. and for a superposition of structures and Alfven waves. are discussed. The difference between the various approaches to derive and handle the transfer equations are also addressed. Finally some theoretical description of the compressible fluctuations are also briefly reviewed.

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