Simulations of Turbulent Flows with Strong Shocks and Density Variations Presenter: Andrew Cook, LLNL Authors: Andrew Cook, Johan Larsson, Sanjiva Lele, Parviz Moin, Bill Cabot, Bjorn Sjögreen, Helen Yee, Xiaolin Zhong

Many important fluid flows involve turbulence, strong shock waves, and mixing at material interfaces. Some examples are SCRAMJET combustion, detonations, supernovae explosions, and Inertial Confinement Fusion (ICF). Accurate numerical simulation of these flows is exceptionally challenging due to the need to resolve a wide range of length scales while simultaneously capturing discontinuities. A wide variety of numerical methods and turbulence models are currently “on the market.” By comparing performance on an array of relevant test problems, we are quantifying the relative strengths and weaknesses of the most promising algorithms. The poster provides a brief overview of the computational challenges, some test problem results, our strategy towards an accurate robust and efficient simulation methodology, and some recent progress. More information is available at http://shocks.stanford.edu.