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Block-structured AMR algorithms for complex hyperbolic applications

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The talk gives an overview of the schemes and algorithms available in the generic fluid solver framework AMROC . The software implements parallel block-structured dynamic mesh adaptation for explicit Cartesian finite volume methods and employs the approach for multi-physics applications, particularly fully coupled fluid-structure interaction simulations, as part of the Virtual Test Facility (http://www.cacr.caltech.edu/asc). A level-set-based ghost-fluid approach is used to consider arbitrary geometries on the Cartesian mesh, and a temporal splitting approach has been adopted to incorporate on-the-fly coupling to explicit methods for computational solid dynamics. Three-dimensional fluid-structure interaction simulations of shock- and detonation-driven fracture and deformation phenomena will be shown that confirm the efficiency of the proposed techniques for problems with heavily evolving topology. Further on, several large-scale applications of AMROC to shock-induced combustion and shock-driven turbulent mixing will be presented. Where they are non-standard, e.g., for gas-liquid flows or detonation waves with detailed chemical kinetics, the employed upwind discretizations will be described. A brief discussion of the software design and the present parallel performance will conclude the presentation.

This talk is part of the Laboratory for Scientific Computing series.

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