ADAPTIVELY REFINED LARGE EDDY SIMULATIONS OF A GALAXY CLUSTER: TURBULENCE MODELING AND THE PHYSICS OF THE INTRACLUSTER MEDIUM
作者： A. Maier , L. Iapichino , W. Schmidt , J. C. Niemeyer
DOI: 10.1088/0004-637X/707/1/40
关键词: Statistical physics 、 Adiabatic process 、 Galaxy cluster 、 Internal energy 、 Physics 、 Turbulence 、 Adaptive mesh refinement 、 Energy budget 、 Cluster (physics) 、 Dissipation 、 Astrophysics 、 Space and Planetary Science 、 Astronomy and Astrophysics
摘要: We present a numerical scheme for modelling unresolved turbulence in cosmological adaptive mesh refinement codes. As first application, we study the evolution of intra-cluster medium and core galaxy cluster. Simulations with without subgrid scale model are compared detail. Since flow ICM is subsonic, global turbulent energy contribution at length scales smaller than 1% internal energy. find that production closely correlated merger events occurring cluster environment, its dissipation locally affects budget. Because this additional source dissipation, temperature larger density presence standard adiabatic run, resulting higher entropy value.
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