Coupling 3-D Multiphase Reaction, Radiation and CFD

Intended for modeling three dimensional reacting and nonreacting two-phase flow of gases and particles or droplets in complex geometries. Typical applications include coal-fired utility boilers, metallurgical processing furnaces, rotary kilns, and decoking process heaters. Particular emphasis is placed on combustion and gasification of pulverized coal and on pollutant formation and destruction.

CAPABILITIES: ~ complex three-dimensional geometries ~ polydispersed phases of gases and particles, droplets or slurries with full mass, momentum and energy coupling between phases ~ multiple reaction rate processes for liquid vaporization, coal devolatization and heterogeneous particle reactions ~ steady state, laminar or turbulent flows ~ mixing and reaction of multiple fuels ~ full coupling between turbulent fluid mechanics, radiative and convective heat transfer, and chemical reactions ~ radiative heat transfer for scattering-absorbing-emitting, turbulent, sooting media ~ NOx/SOx formation and destruction ~ variable thermal boundary conditions including adiabatic, thermal resistance, "heat exchanger" ~ prediction of particle trajectories, concentrations and dispersion ~ slagging, particle deposition ~ soot

APPLICATIONS: ~ burner and furnace design ~ coal combustion and gasification ~ cyclone barrels & other metallurgical processes ~ coal slurries, liquid sprays ~ waste incineration ~ diffusion flames ~ pollutant formation and destruction ~ SNCR ~ radiation in participating media ~ computational fluid dynamics ~

ALGORITHMS: robust, accurate, iterative solvers to extract the non-linear coupling between turbulent fluid mechanics, gas phase reaction chemistry (including NOx), heat transfer (particularly radiation), particle phase reaction, turbulent particle dispersion, and particle-wall or heat transfer surface interactions. Particle/fluid interphase coupling is included through a moving-Eulerian particle cloud tracking and source distribution technique. Computations of turbulent fluctuations include statistical distributions for all reaction and radiation properties. Reaction and radiation calculations can include any number of chemical species.