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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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