000			01796nab a2200205 4500
005			20260520000838.0
008			260224s2009 xxu
245	0	0	_aExperimental and numerical investigation of gas-phase freeboard combustion. _bMain combustion process
260			_a _b _cnov./dic. 2009
270			_a09/06/2010 ; 09/06/2010
300			_a10 p. ; 5773-5782
520			_aTranscripción del resumen del autor. Experimental data for velocity field, temperatures, and gas composition have been obtained from a 50 kW axisymmetric non-swirling natural gas fired combustion setup under two different settings. The reactor was constructed to simulate the conditions in the freeboard of a grate-fired boiler but under well-defined conditions. The experimental results are compared to computational fluid dynamics (CFD) modeling predictions, using the eddy dissipation model (EDM) as well as the eddy dissipation concept (EDC). The use of EDC allows for implementation of more advanced combustion schemes; we have tested the four-step global mechanism by Jones and Lindstedt ( Combust. Flame 1988, 73, 233-249), and the 16 species and 41 reaction skeletal mechanism by Yang and Pope ( Combust. Flame 1998, 112, 16-32). The CFD model captured the main features of the combustion process and flow patterns. The application of more advanced chemical mechanisms did not improve the prediction of the overall combustion process but did provide additional information about species (especially H2 and radicals), which is desirable for postprocessing pollutant formation.
581			_a6
773	0		_tEnergy & fuels _g23
942			_cARTICULO
100	1		_aAndersen, Jimmy _942343
100	1		_aJensen, Peter Arendt _936023
100	1		_aMeyer, Knud Erik _942344
999			_c170817 _d170817