Turbulence in the ICM from mergers, cool-core sloshing and jets: results from a new multi-scale filtering approach

Understand

We have designed a simple multi-scale method that identifies turbulent motions in hydrodynamical grid simulations.

• The method does not assmume ant a-priori coherence scale to distinguish laminar and turbulent flows.
• Instead, the local mean velocity field around each cell is reconstructed with a multi-scale filtering technique, yielding the maximum scale of turbulent eddies by means of iterations.
• The method is robust, fast and easily applicable to any grid simulation.