Soot emissions from spherical droplet flames for mixtures of JP8 and tripropylene glycol monomethyl ether.
Soot emissions from spherical droplet flames for mixtures of JP8 and tripropylene glycol monomethyl ether.
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JP8 和三丙二醇单甲醚混合物的球形液滴火焰产生的烟灰排放。
DOI：
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发表时间：
2005
影响因子：
11.4
通讯作者：
C. Avedisian
中科院分区：
文献类型：
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作者：
J. Bae;C. Avedisian
研究了煤油基燃料JP 8与20%（体积）三丙二醇单甲醚（TPGME，CH 3 [CH 2CH（CH 3）O]3OH）的混合燃烧，考察了组成对近球对称孤立静止液滴燃烧碳烟动力学的影响。球形液滴火焰的特征在于具有同心火焰和液滴的一维传输过程，以及烟灰聚集体被捕获在“壳”或“云”中的液滴和火焰之间的烟灰配置。从液滴燃烧过程的照片文件中推断出炭黑趋势，并发现大致顺序为JP 8> JP 8 + 10%TPGME> JP 8 + 20%TPGME。达到20%时，烟灰云几乎消失。最大烟炱聚集体直径为80（+/-17）nm，与组成无关。优先蒸发是明显的，如由液滴直径（平方）的演变中的平台所证明的，这表明TPGME对JP 8中的其它组分的主导影响，这使得JP 8/TPGME表现得几乎像二元混合物，尽管JP 8/TPGME共混物具有高度多组分的性质。火焰，烟尘云，和液滴直径的缩放关系，以巩固到一个单一的曲线上的测量。
The combustion of JP8 (a kerosene-based fuel) mixed with up to 20% (volume) tripropylene glycol monomethyl ether (TPGME, CH3[CH2CH(CH3)O]3OH) is studied to examine the influence of composition on soot dynamics for the configuration of an isolated and stationary droplet burning with nearly spherical symmetry. The spherical droplet flame is characterized by a one-dimensional transport process with a concentric flame and droplet, and a sooting configuration for which the soot aggregates are trapped between the droplet and flame in a "shell" or "cloud". Sooting tendencies are inferred from photographic documentation of the droplet burning process and are found to be in the approximate order JP8 > JP8 + 10% TPGME > JP8 + 20% TPGME. At 20% the soot cloud all but disappears. The maximum soot aggregate diameter is 80 (+/-17) nm, independent of composition. Preferential vaporization is pronounced as evidenced by a plateau in the evolution of the droplet diameter (squared) which indicates a dominant influence of TPGME over other constituents in JP8 that makes JP8/TPGME behave almost like a binary mixture despite the highly multicomponent nature of the JP8/TPGME blend. A scaling relationship for flame, soot cloud, and droplet diameters is shown to consolidate the measurements onto a single curve.