Simulation of a particle-laden combustion flow in an MHD second stage combustor

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6925610

Chang, S L; Lottes, S A

An Argonne two-phase combustion flow computer code is used to simulate reacting flows to aid the development of an advanced combustor for magnetohydrodynamic power generation. The combustion code is a general hydrodynamics computer code for two-phase two-dimensional, steady state, turbulent, and reacting flows, based on mass, momentum, and energy conservation laws for multiple gas species. The combustion code includes turbulence, integral combustion, and particle evaporation submodels. The newly developed integral combustion submodel makes calculations more efficient and more stable while still preserving major physical effects of the complex combustion processes. The combustor under investigation is a magnetohydrodynamic second stage combustor in which opposed jets of oxidizer are injected into a confined cross-stream of hot coal gas flow following a first stage swirl combustor. The simulation is intended to enhance the understanding of seed particle evolution in the combustor and evaluate the effects of combustor operation conditions on seed particle evolution and vapor dispersion, which directly affect overall magnetohydrodynamic power generation. Simulation results show that oxidizer jet angle and particle size have great effect on the particle evolution and vapor dispersion. At a jet angle about 130 degrees, particle evaporation rate is the highest because of the highest average gas temperature. For particles having a smaller mean diameter, particle evaporation is more complete and vapor dispersion is more uniform.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6925610
• Report Number(s): ANL/CP-75323; CONF-921110--41; ON: DE93004244
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300102* -- MHD Generators-- Performance & Testing
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPUTER CODES
COMPUTERIZED SIMULATION
DIRECT ENERGY CONVERTERS
ENERGY SOURCES
FLUID FLOW
FOSSIL FUELS
FUELS
MATERIALS
MATHEMATICAL MODELS
MHD GENERATORS
OXIDATION
SIMULATION
THERMOCHEMICAL PROCESSES
TWO-PHASE FLOW