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Paper: Universality and Intermittency in Relativistic Turbulent Flows of a Hot Gas
Volume: 474, Numerical Modeling of Space Plasma Flows (ASTRONUM2012)
Page: 25
Authors: Radice, D.; Rezzolla, L.
Abstract: With the aim of determining the statistical properties of relativistic turbulence and unveiling novel and non-classical features, we present the results of direct numerical simulations of driven turbulence in an ultrarelativistic hot plasma using high-order numerical schemes. We study the statistical properties of flows with average (in space and time) Mach number ranging from ∼ 0.4 to ∼ 1.7 and with average Lorentz factors up to ∼ 1.7. We find that flow quantities, such as the energy density or the local Lorentz factor, show large spatial variance even in the subsonic case as compressibility is enhanced by relativistic effects. The velocity field is highly intermittent, but its power-spectrum is found to be in good agreement with the predictions of the classical K41 theory of Kolmogorov.
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