IllinoisRocstar LLC is a limited liability company founded in 2007 to perform computational engineering analyses for commercial industries and U.S. government agencies. Using the Rocstar Simulation Suite of integrated simulation software, the members of IllinoisRocstar employ first-principles based physics for high-fidelity numerical analysis of fluid flows, combustion, materials, structures, and their interactions in complex changing geometries. The principals and members of the company are experienced leaders and senior scientists using advanced computation and simulation techniques to understand the implications of three-dimensional fluid-structure interactions on the design and application of engineered devices. IllinoisRocstar seeks to commercialize and extend simulation software developed at the University of Illinois Center for Simulation of Advanced Rockets and other sources, as well as developing new and innovative simulation tools.

Stack Plume

The simulation above shows pressure contours and crystal isosurfaces for a Mach 1.6 planar shock wave moving through a 3D medium composed of an inert wax binder material with HMX crystals. The shock transports the crystals to the right as it passes, and will cause a reactive binder material to react, as well as compress the crystals. Ongoing work in void collapse and chemistry modeling will allow mesoscale predictive shock-to-detonation modeling of energetic material microstructures with the IllinoisRocstar RocSDT code.

Stack Plume

This simulation shows temperature isosurfaces for a 3D simulation of a heated jet injecting into a subsonic crossflow. The temperatures range from 300K (blue - crossflow) to 450K (red - injecting jet). The structured-block Rocflo module from the Rocstar Simulation Suite was used for this simulation, as well as the Rocturb module's Dynamic Smagorinsky LES turbulence model.The results were validated against wind tunnel data produced by the University of Illinois at Urbana-Champaign under a Navy STTR.

The Rocstar Simulation Suite provides IllinoisRocstar LLC with capabilities to perform engineering simulations in three dimensions of many different types of computational fluid dynamics (CFD) problems, coupling those simulations with the structural response, combustion and heat transfer to address many different multiphysics problems of industrial and national interest.