Spectral and Intermittency Properties of Relativistic Turbulence
  High-resolution numerical simulations are utilized to examine isotropic turbulence in a compressible fluid when long wavelength velocity fluctuations approach light speed. Spectral analysis reveals an inertial sub-range of relativistic motions with a broadly 5/3 index. The use of generalized Lorentz-covariant structure functions based on the four-velocity is proposed. These structure functions extend the She-Leveque model for intermittency into the relativistic regime. 
Jonathan Zrake, Andrew MacFadyen
astro-ph.HE physics.comp-ph physics.flu-dyn