Shapes of buoyant and nonbuoyant laminar jet diffusion flames

Sunderland, Peter B.; Mendelson, B.J.; Zhuang, Yuan; Urban, David L.

doi:10.1016/s0010-2180(98)00045-5

Cited by 110 publications

(40 citation statements)

References 19 publications

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“…Fig. 9 shows measurements of Lf for CH4 flames [50]. Note that, as the scalings predict, Lf/d o _ Re _ Uod,/v at both lg and/Jg, and only small differences exist between lg and/ag flame lengths.…”

Section: Stretched Flamesmentioning

confidence: 78%

“…All/Jg studies show larger flame widths (w) at #g than lg due to lower U and longer tie t [50]. Also, w is larger at #g because the temperatures are lower (see below) and D _ T 1--_. FIC.…”

Section: Stretched Flamesmentioning

confidence: 97%

“…Data is taken from a variety of sources and compiled in Ref. [50]. The data show larger flame widths atpg due to the differences between accelerating flow at lg versus decelerating flow at pg.…”

Section: Stretched Flamesmentioning

confidence: 99%

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Understanding combustion processes through microgravity research

Ronney

1998

Symposium (International) on Combustion

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Section: Stretched Flamesmentioning

confidence: 78%

“…All/Jg studies show larger flame widths (w) at #g than lg due to lower U and longer tie t [50]. Also, w is larger at #g because the temperatures are lower (see below) and D _ T 1--_. FIC.…”

Section: Stretched Flamesmentioning

confidence: 97%

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Understanding combustion processes through microgravity research

Ronney

1998

Symposium (International) on Combustion

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“…Roper and Smith [7] have also pointed out the importance of distinguishing between the two heights. Experimentally, Sunderland et al [8] have noticed the difficulty of measuring the stoichiometric flame height for soot-containing flames. Regarding the processes of soot formation and oxidation other heights have been defined and studied in literature.…”

Section: Flame Heights and Soot Modellingmentioning

confidence: 99%

Soot Formation and Oxidation in Fires from Laminar Smoke Point Measurements

Beji¹,

Zhang²,

Delichatsios³

2008

Fire Saf. Sci.

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A soot formation and oxidation model appropriate for fires is first developed for laminar axisymmetric nonpremixed flames. This model relies on flow similarity relationships to describe the structure of the flame and relate it to soot processes in laminar smoke point flames. The selection of the parameters is focused on the stoichiometric and visible heights. The evaluation of this model is achieved by means of comparisons of numerical results with experimental data and observations for an axisymmetric coflow laminar ethylene/air nonpremixed flame. The model gives satisfactory results and a good phenomenological explanation of the influence of soot processes on the structure of the flame. This model will be applied next to turbulent flames and fires.

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“…4 shows, upon ignition a premixed deflagration propagatesoutward quickly and then the flame contracts into nonpremixedconditions From about200-400ms after ignition until drop termination,the flames grow monotonically but do not reachsteadydiameters;this transient behavior is especially evident where nitrogen is supplied in the ambientgas. Microgravity tests in gas-jet flames indicate that althoughquasi-steady flame shapesappearwithin a few seconds [20,21], steady sooting behavior requires test times exceeding those of ground-basedfacilities [21].…”

mentioning

confidence: 99%