The FEARLESS Cosmic Turbulence Project

Details The FEARLESS Cosmic Turbulence Project The FEARLESS Cosmic Turbulence Project

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005iat..work..175n&link_type=abstract

"Proceedings of the workshop on "Interdisciplinary Aspects of Turbulence" Ringberg Castle, Tegernsee, Germany, April 18 - 22,200

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We plan to develop, implement, and apply a new numerical scheme for modeling turbulent, multiphase astrophysical flows such as galaxy cluster cores and star forming regions. The method combines the capabilities of adaptive mesh refinement (AMR) and large-eddy simulations (LES) to capture localized features and to represent unresolved turbulence, respectively; it will therefore be referred to as Fluid mEchanics with Adaptively Refined Large- Eddy SimulationS or FEARLESS. Recent advances in the field of dynamical subgrid-scale (SGS) models for LES of thermonuclear supernovae enable us to formulate a self-consistent SGS model on adaptive meshes based on local similarity arguments for turbulent transport. Continuing our promising first tests, we intend to implement a full dynamical SGS model into the existing AMR hydrocode ENZO, followed by simulations of turbulent star forming clouds and galaxy cluster turbulence.

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