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Multiphysics Simulations Supersonic nozzle flow against a flat plate, showing density (grey) and vorticity (colors). Read More >

Rocstar Simulation Cutaway of a joint slot in the Space Shuttle solid motor showing inhibitor fluid-structure interaction. Read More >

Rocstar Multiphysics

Tackling the toughest computational simulations.
Rocstar Multiphysics—Built for Big Iron.

Rocstar Multiphysics is designed to conquer engineering problems of large scale. Rocstar is engineered for the fields of solid propellant rocket and missile design, multiphysics-dependent engineering and manufacturing simulations, and other highly complex, high-performance applications. Including state-of-the-art physics modules and coupling algorithms, Rocstar targets users who  need ironclad solutions to high-cost, time-intensive problems that require extensive computational capability.


Science in the code. Rocstar is architected from the ground-up to be a massively parallel simulation suite and stands ready to leverage the high-performance-computing resources of the future.  It is routinely used on hundreds to thousands of processors, and has successfully performed simulations on over 50,000 cores. Rocstar offers a software integration and multiphysics coupling framework that interfaces with models and software packages that leverage your scientific and engineering expertise (this framework also forms the core of Illinois Rocstar’s IMPACT multiphysics toolkit). Rocstar runs on hardware from large engineering workstations to some of the biggest supercomputers in the world.

Rocstar Multiphysics contains modules and support for:

Rocstar can be used to solve many general compressible fluid-dynamics, FSI, and fluid-structural-thermal problems. The diagram below provides an outline of the structure of Rocstar Multiphysics. As seen here, Rocstar contains multiple fluid mechanics, solid mechanics and propellant burn-rate models, as well as the computational infrastructure to allow those physics modules to work together to formulate complex multiphysics problems.


Examples of past uses of Rocstar Multiphysics include (also see Rocstar Simulations page):

The Future. Rocstar Multiphysics will evolve along with the Illinois Rocstar IMPACT project into an ala-carte menu of capabilities able to be tied together with other proprietary and open-source software to generate advanced multiphysics modeling toolkits, tailored to solve the problems that are important to your organization. If you are interested in being part of the Consortium for Open Multiphysics, visit openmultiphysics.org to contact the group.

New!! The Rocstar Simulation Suite is now open-source and free! Download your copy today: http://rocstar.org

Who needs Rocstar? Rocstar Multiphysics is designed to support scientists and engineers with enormously complex problems that require multi-million-dollar hardware—working long stretches at full steam—to simulate. Rocstar targets massively parallel platforms and has been run on some of the largest machines in the world. However, it also has application on multicore workstations for smaller problems. Applications extend across the U.S. military branches, Department of Defense, Missile Defense Agency, NASA, aeronautics companies and manufacturers, and any agency—academic, public or private—that needs to cut expenses while their R&D soars ahead of the pack.