Simulations show the Strouhal number of supernova-driven interstellar turbulence is approximately 0.25, with St reaching 1 only at about 12-13% of the outer scale near the cooling radius of remnants.
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TNG-Cluster simulations find that in galaxy cluster centers turbulence accounts for under half the total velocity dispersion (typically 50-75 km/s), is mostly subsonic, provides sub-percent pressure support, and is primarily driven by SMBH feedback.
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What is the Strouhal number of turbulence driven by supernovae?
Simulations show the Strouhal number of supernova-driven interstellar turbulence is approximately 0.25, with St reaching 1 only at about 12-13% of the outer scale near the cooling radius of remnants.
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Bulk vs. turbulent motions at the centres of galaxy clusters: AGN-driven turbulence according to TNG-Cluster
TNG-Cluster simulations find that in galaxy cluster centers turbulence accounts for under half the total velocity dispersion (typically 50-75 km/s), is mostly subsonic, provides sub-percent pressure support, and is primarily driven by SMBH feedback.