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

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

Rocstar Simulations

Solid Propellant Rockets


Isosurfaces of velocity in a supersonic external flow simulation of the Ares I booster using the Rocflo CFD solver in Rocstar.


Cutaway view of fluid-structure-interaction simulation in a 15 lb BATES motor showing velocity glyphs and stress in center perforated propellant grain.



Joint slot area in the space shuttle reusable solid rocket motor (RSRM) at late burn time showing turbulent flow past a protruding inhibitor flap. Dynamic Smagorinsky LES turbulence model used with total vorticity shown.


Cutaway of fluid-structure-interaction Rocstar simulation of the Titan IV joint slot showing velocity glyphs in bore (notice acceleration and pressure drop as flow passes restriction at joint) and stress developing in lower grain. Geometry of 1991 test stand failure.

Nozzle 1

Simulation of BATES motor nozzle visualizing aluminum and aluminum oxide particulates passing into and through nozzle.


Simulation of Ares Launch Abort Motor. Velocity isosurfaces shown in cutaway of upper quad-nozzle plenum.


Space Shuttle Booster Separation Motor milliseconds after ignition showing swirl in nozzle inlet area due to canted nozzle.


Space Shuttle Reusable Solid Rocket Motor (RSRM) 0.7 seconds after ignition showing temperature contours within star grain and down center bore.

Other Simulations


Simulation of a circular cross section jet injecting heated air at 10 m/s into a 30 m/s crossflow. Temperature isosurfaces shown.


Simulation of a 15:1 aspect ratio rectangular jet injecting heated air at 10 m/s into a 30 m/s crossflow. Vorticity isosurfaces with temperature colors shown.


Simulation of fuselage and wing of a subsonic (Mach 0.3) T38 trainer at high angle of attack showing total vorticity contours.