Direct Numerical Simulations of Turbulent, Multiphysics Hypersonic Flows at Extreme Scales*

At enthalpies of tens of MJ/kg, the fluid dynamics of high-speed flows past aerodynamically-shaped objects is characterized by shock-turbulence-material interactions.  We seek to understand the details of these interactions through the use of direct numerical simulations of the compressible turbulent reactive flow coupled with material response simulations of the adjacent structure.  Our approach utilizes multiple domain-specific codes built for heterogeneous computing architectures that are coupled through a data exchange and time integration framework.  The presentation will describe these tools through their application on a Mach 6 flow interacting with a 35 degree compression ramp with an embedded compliant panel.  The conditions and model geometry match experiments conducted in the NASA Langley 20-inch Mach 6 tunnel, including a simulated incoming sound field due to tunnel wall boundary layer noise.