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  Universality and intermittency in relativistic turbulent flows of a hot gas

Radice, D., & Rezzolla, L. (2013). Universality and intermittency in relativistic turbulent flows of a hot gas. In N. Pogorelov, E. Audit, & G. Zank (Eds.), NUMERICAL MODELING OF SPACE PLASMA FLOWS ASTRONUM-2012 (Astronomical Society of the Pacific Conference Series ) (pp. 25-30).

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1210.7081 (Preprint), 138KB
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1210.7081
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 Urheber:
Radice, David1, Autor
Rezzolla, Luciano1, Autor           
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

Inhalt

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Schlagwörter: Physics, Fluid Dynamics, physics.flu-dyn, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc
 Zusammenfassung: 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 Mach number ranging from $\sim 0.4$ to $\sim 1.7$ and with average Lorentz factors up to $\sim 1.7$. 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 theory of Kolmogorov.

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 Datum: 2012-10-262013
 Publikationsstatus: Erschienen
 Seiten: Talk given at the ASTRONUM2012 conference on the 25th of June 2012
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 Identifikatoren: arXiv: 1210.7081
URI: http://arxiv.org/abs/1210.7081
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Veranstaltung

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Titel: 7th Annual International Conference on Numerical Modeling of Space Plasma Flows Location
Veranstaltungsort: Big Isl, HI
Start-/Enddatum: 2012-06-25 - 2012-06-29

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Titel: NUMERICAL MODELING OF SPACE PLASMA FLOWS ASTRONUM-2012 (Astronomical Society of the Pacific Conference Series )
Genre der Quelle: Konferenzband
 Urheber:
Pogorelov, N.V.1, Herausgeber
Audit, E.1, Herausgeber
Zank, G.P.1, Herausgeber
Affiliations:
1 Univ Alabama, Ctr Space Plasma & Aeronom Res; CEA CNRS, Maison Simulat, ou_persistent22            
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 474 Artikelnummer: - Start- / Endseite: 25 - 30 Identifikator: -