Other
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.conf...81m&link_type=abstract
Max-Planck-Inst. für Aeronomie, International Solar Wind 8 Conference, p. 81
Other
1
Magnetohydrodynamic Turbulence, Solar Wind, Kinetic Energy, Energy Dissipation, Wind Measurement, Protons, Fractals, Scaling Laws, Autocorrelation, Magnetic Flux, Flux Density
Scientific paper
The geometrical and scaling properties of the energy flux of the turbulent kinetic energy in the solar wind have been studied. By present experimental technology in solar wind measurements, we cannot directly measure the real volumetric dissipation rate, epsilon(t), but are constrained to represent it by surrogating the energy flux near the dissipation range at the proton gyro scales. There is evidence for the multifractal nature of the so defined dissipation field epsilon(t), a result derived from the scaling exponents of its statistical q-th order moments. The related generalized dimension D(q) has been determined and reveals that the dissipation field has a multifractal structure. which is not compatible with a scale-invariant cascade. The associated multifractal spectrum f(alpha) has been estimated for the first time for MHD turbulence in the solar wind. Its features resemble those obtained for turbulent fluids and other nonlinear multifractal systems. The generalized dimension D(q) can, for turbulence in high-speed streams, be fitted well by the functional dependence of the p-model with a comparatively large parameter, p = 0.87. indicating a strongly intermittent multifractal energy cascade. The experimental value for D(p)/3, if used in the scaling exponent s(p) of the velocity structure function, gives an exponent that can describe some of the observations. The scaling exponent mu of the auto correlation function of epsilon(t) has also been directly evaluated. It has the value of 0.37. Finally. the mean dissipation rate was determined, which could be used in solar wind heating models.
Marsch Eckart
Rosenbauer Helmut
Tu Chia-Ying
No associations
LandOfFree
Multifractal scaling of the kinetic energy flux in solar wind turbulence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multifractal scaling of the kinetic energy flux in solar wind turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multifractal scaling of the kinetic energy flux in solar wind turbulence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-760181