CHEM: Computational Combustion Modeling
Chem is the first application developed using the Loci
framework. Chem is a full featured Navier-Stokes solver for
non-equilibrium flows involving chemical reactions. The solver uses
advanced generalized grid algorithms based on finite-volume methods
and high resolution Riemann solvers.
For more information on the algorithms used in the CHEM code, refer to
our paper: " A Chemically
Reacting Flow Solver for Generalized Grids"
Numerical simulations of a blast buried in sand
This shows a simulation of a detonation of a charge buried in sand.
This simulation is performed using Loci/CHEM making use of the
Loci/BLAST module. The air is colored by pressure, the sand color is
density, while the blast gases are colored by gradiation of orange
corresponding to temperature.
Numerical simulation of powered stage separation
This shows a simulation of a powered stage separation of a hypothetical two stage missile traveling at Mach 5. This utilizes the unstructured overset mesh capability of Loci/CHEM.
Animation showing rocket plume interactions
Animation with cut-away revealing rocket nozzle flow
Cutting plane showing overset mesh
Numerical and experimental results of air impinging with a flat plate
at 30 degrees.
Multiphase solid rocket simulation with radiative heat transfer
Shows solid rocket at launch with flame bucket and blast deflector
wall. The isosurface of a fixed particle number density is shown
colored by particle temperatures. The ground plane is colored by
radiative heat fluxes radiated from the solid rocket plume. This
simulation utilized a two species fluid model, a two-way coupled
Eulerian two-phase particle model, and a non-gray CADOM radiation
Hypersonic Reentry of X38 Crew Return Vehicle
Mach 10 high altitude re-entry simulation results at 60 degrees angle of attack (Including endothermic dissociation reactions provided by chemistry model of Kang and Dunn):
Pressure along cutting plane and surface of X38:
Close up showing adapted mesh near the leading bow shock:
NO Mass fractions along cutting plane and surface of X38:
Simulation of a Shuttle Derived Heavy Lift Vehicle
Pressures on vehicle surface:
Vehicle and Plumes:
Rocket-Based Combine-Cycle (RBCC) Engine Benchmark Results
Air inlet streamlines
Hydrogen Afterburner streamlines