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首页> 外文OA文献 >Puffing and micro-explosion behavior in combustion of butanol/Jet A-1 and acetone-butanol-ethanol (A-B-E)/Jet A-1 fuel droplets
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Puffing and micro-explosion behavior in combustion of butanol/Jet A-1 and acetone-butanol-ethanol (A-B-E)/Jet A-1 fuel droplets

机译：丁醇/ Jet a-1燃烧时的膨化和微爆行为   和丙酮 - 丁醇 - 乙醇（a-B-E）/ Jet a-1燃料液滴

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The present investigation deals with the puffing and micro-explosioncharacteristics in the combustion of a single droplet comprising butanol/JetA-1, acetone-butanol-ethanol (A-B-E)/Jet A-1 blends, and A-B-E. The onset ofnucleation, growth of vapor bubble and subsequent breakup of droplet forvarious fuel blends have been analyzed from the high-speed images. Puffing wasobserved to be the dominant phenomenon in 30% butanol blend, whilemicro-explosion was found to be the dominant one in other fuel blends (blendwith 50% butanol or 30% A-B-E or 50% A-B-E). It was observed that puffingalways preceded the micro-explosion. The probability of micro-explosion indroplets with A-B-E blends was found to be higher than that of butanol blends.Although the rate of bubble growth was almost similar for all butanol and A-B-Eblends, the final bubble diameter before the droplet breakup was found to behigher for 50/50 blends than that of 30/70 blends. The occurrence ofmicro-explosion shortened the droplet lifetime, and this effect appeared to bestronger for droplets with 50/50 composition. Micro-explosion led to theejection of both larger and smaller secondary droplets; however, puffingresulted in relatively smaller secondary droplets compared to micro-explosion.Puffing/micro-explosion were also observed in the secondary droplets.
机译：本研究涉及单个液滴的燃烧中的膨化和微爆炸特性，该液滴包含丁醇/ JetA-1，丙酮-丁醇-乙醇（A-B-E）/ Jet A-1混合物和A-B-E。从高速图像中已经分析了各种燃料共混物的成核开始，蒸气气泡的增长以及液滴的破裂。在30％的丁醇混合物中观察到膨化是主要现象，而在其他燃料混合物中（与50％的丁醇或30％的A-B-E或50％的A-B-E掺和），微爆是最主要的现象。据观察，膨化总是发生在微爆炸之前。发现与ABE共混物发生微爆炸的可能性高于丁醇共混物。虽然所有丁醇和AB-Eblends的气泡生长速率几乎相似，但发现液滴破裂前的最终气泡直径更高50/50混合比30/70混合。微爆炸的出现缩短了液滴的寿命，并且对于组成为50/50的液滴，这种作用似乎更强。微爆炸导致较大和较小的次级液滴均被喷射出。然而，与微爆炸相比，膨化导致相对较小的次级液滴。在次级液滴中也观察到了膨化/微爆炸。

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