Macroscopic Flame Structure in a Premixed-Spray Burner. 1st Report. Formation and Disappearance Processes of Droplet Clusters and Two-Stage Flame Structure.
نویسندگان
چکیده
منابع مشابه
Flame Structure Interactions and State Relationships in an Unsteady Partially Premixed Flame
In this investigation our objective is 1) to compare the similitude between an unsteady, two-dimensional (axisymmetric), partially premixed ame and an analogous steady, partially premixed amelet to determine if state relationshipsin terms ofamodi ed conserved scalar applyand2) to investigate amestructure interactionsbetween the various reaction zones contained in partially premixed ames...
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We numerically study spray-flame dynamics. The initial state of the spray is schematized by alkane droplets located at the nodes of a face-centered 2D-lattice. The droplets are surrounded by a gaseous mixture of alkane and air. The lattice spacing s reduced by the combustion length scale is large enough to consider that the chemical reaction occurs in a heterogeneous medium. The overall spray e...
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The nonlinear nonlocal Michelson-Sivashinsky equation for isolated crests of unstable flames is studied, using pole-decompositions as starting point. Polynomials encoding the numerically computed 2N flame-slope poles, and auxiliary ones, are found to closely follow a MeixnerPollaczek recurrence; accurate steady crest shapes ensue for N3. Squeezed crests ruled by a discretized Burgers equation ...
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There is considerable interest in developing fuel-flexible, low emissions turbines for power generation. One approach is based on burning a variety of lean premixed fuels with relatively low flame temperatures. Such flames can be stabilized in a low swirl burner configuration, for example, using a variety of fuels such as pure hydrogen and hydrogen-seeded hydrocarbon mixtures. However, many hyd...
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ژورنال
عنوان ژورنال: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
سال: 2000
ISSN: 0387-5016,1884-8346
DOI: 10.1299/kikaib.66.648_2227