Spray Characteristics of High-Pressure Swirl Injector Fueled with Methanol and Ethanol
Spray Characteristics of High-Pressure Swirl Injector Fueled with Methanol and Ethanol
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DOI：
10.1021/ef050135w
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发表时间：
2005-09
期刊：
影响因子：
5.3
通讯作者：
Xibin Wang;J. Gao;D. Jiang;Zuo-hua Huang;Wansheng Chen
中科院分区：
文献类型：
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作者：
Xibin Wang;J. Gao;D. Jiang;Zuo-hua Huang;Wansheng Chen
对甲醇和乙醇在高压旋流喷嘴内的喷雾特性进行了实验研究和数值模拟。试验结果表明，甲醇和乙醇的喷雾特性与汽油的喷雾特性具有相同的变化趋势。在低背压环境条件下，喷雾行为表现为宽喷雾角的空心锥，且初始喷雾段塞位于喷嘴尖端;而在高背压环境条件下，喷雾行为表现为实心锥。在低背压环境条件下，在喷雾的后部存在相反方向的涡流，而在高背压环境条件下，在喷雾的中部形成涡流。实验还表明，甲醇给出了最大的锥角，而乙醇和汽油呈现几乎相同的锥角。模拟结果表明，甲醇和乙醇的SMD略大于汽油旋流喷油器。甲醇和乙醇在低反压下的SMD曲线吻合较好。
The spray characteristics of methanol and ethanol with high-pressure swirl injector are explored experimentally and numerically. Experimental results showed that the spray characteristics of methanol and ethanol gave the same trend as that of gasoline. Under the low back-pressure ambient conditions, the spray behavior exhibits a hollow cone with wide spray angle and initial spray slug at the tip, while the spray presents a solid cone in the case of high back pressure. Vortexes in the opposite direction exist in the rear part of the spray under low back-pressure ambient conditions while the vortexes form in the middle part under high back-pressure ambient conditions. Experiments also showed that methanol gave the largest cone angle, while ethanol and gasoline present almost the same cone angle. Simulation results indicated that methanol and ethanol have a slightly larger SMD than that of gasoline with swirl injector. The SMD profile of methanol coincides well with that of ethanol under low back-pressure am...