A possible closure relation for heat transport in the solar wind

Details A possible closure relation for heat transport in the solar wind A possible closure relation for heat transport in the solar wind

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.6621f&link_type=abstract

Journal of Geophysical Research, vol. 84, Nov. 1, 1979, p. 6621-6632. Research sponsored by the U.S. Department of Energy and N

Physics

7

Closure Law, Heat Transfer, Solar Wind, Boltzmann Transport Equation, Core Flow, Coulomb Collisions, Electric Fields, Electron Energy, Electron Scattering, Flow Distribution, Imp, Interplanetary Magnetic Fields, Macroscopic Equations

Scientific paper

The objective of the present paper is to search for an empirical closure relation for solar wind heat transport that applies to a microscopic scale. This task is approached by using the quasi-linear wave-particle formalism proposed by Perkins (1973) as a guide to derive an equation relating the relative drift speed between core-electron and proton populations to local bulk flow conditions. The resulting relationship, containing one free parameter, is found to provide a good characterization of Los Alamos Imp electron data measuring during the period from March 1971 through August 1974. An empirical closure relation is implied by this result because of the observed proportionality between heat flux and relative drift speed.

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