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Forman A. Williams
University of California, San Diego
376Publications
54H-index
10.5kCitations
Publications 385
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#1Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
#2Vedha Nayagam (Case Western Reserve University)H-Index: 15
Abstract Previously published simplified n-alkane cool-flame chemistry is re-evaluated for n-dodecane. Comparison with experimental results produces improved rate-parameter estimates for n-dodecane and indicates deterioration of the simplified chemistry with increasing pressure in predictions of droplet diameters at cool-flame extinction.
1 CitationsSource
#1Yuanjie Jiang (UCSD: University of California, San Diego)
#2Andrea Gruber (SINTEF)H-Index: 8
Last.Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
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#1Kazunori Kuwana (YU: Yamagata University)H-Index: 17
#2Kozo Saito (UK: University of Kentucky)H-Index: 31
Last.Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
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ABSTRACTA model is proposed for estimating how fire whirls may begin to move along line fires and the velocities at which they may propagate steadily against the direction of the prevailing wind, i...
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#1Daniel Martínez-Ruiz (UPM: Technical University of Madrid)H-Index: 4
#2César Huete (Complutense University of Madrid)
Last.Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
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A simplified formulation, based on treating the ratio of the heat release to the postshock thermal enthalpy as a small parameter, accommodating arbitrary chemistry descriptions, is shown to reprodu...
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#1Adam D. Weiss (UCSD: University of California, San Diego)H-Index: 3
#2Angel Sánchez (UCSD: University of California, San Diego)H-Index: 35
Last.Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
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Abstract The Rayleigh index of counterflow hydrogen–air diffusion flames is employed as a vehicle for quantifying inaccuracies of predictions caused by the introduction of reduced chemistry to decrease computation times. Inaccuracies of a systematically reduced 2-step mechanism, derived from a detailed 12-step mechanism for hydrogen–air systems, are small at low strain rates but become appreciable as extinction is approached.
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#2Adam D. Weiss (UCSD: University of California, San Diego)H-Index: 3
Last.Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
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Abstract A one-step reduced mechanism for hydrogen combustion, previously developed for fuel-lean flames, is extended to apply for all equivalence ratios under near-limit conditions by taking into consideration two additional recombination steps that are important under fuel-rich conditions. It is found that the crossover temperature that appears in the cutoff factor is smaller under fuel-rich conditions. Besides improving insights, the results can be beneficial in speeding computations.
1 CitationsSource
#1Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
#2Vedha Nayagam (Case Western Reserve University)H-Index: 15
Two steady-state chemical-kinetic approximations are introduced into the apparently most relevant five cool-flame steps of the latest San Diego mechanism for n-heptane, supplemented by a sixth step...
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