姚春德,陈志方,吴涛阳,胡江涛,杨 贤,陈世兴.甲醇温度和压力对喷雾特性的影响试验[J].农业机械学报,2015,46(11):377-382.
Yao Chunde,Chen Zhifang,Wu Taoyang,Hu Jiangtao,Yang Xian,Chen Shixing.Experiment on Effects of Methanol Temperature and Pressure on Spray[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(11):377-382.
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甲醇温度和压力对喷雾特性的影响试验   [下载全文]
Experiment on Effects of Methanol Temperature and Pressure on Spray   [Download Pdf][in English]
投稿时间:2015-03-05  
DOI:10.6041/j.issn.1000-1298.2015.11.051
中文关键词:  甲醇 喷雾 温度 压力 激光相位多普勒 高速摄像
基金项目:国家自然科学基金重点资助项目(51336005)
作者单位
姚春德 天津大学 
陈志方 天津大学 
吴涛阳 天津大学 
胡江涛 天津大学 
杨 贤 天津大学 
陈世兴 天津大学 
中文摘要:为了解甲醇自身温度及喷射压力变化对喷雾特性的影响,使用高速摄像机和三维激光相位多普勒颗粒分析仪(PDPA),分别对25、50、60、70、80℃的液态甲醇及喷醇压力为0.3、0.4、0.5MPa时的甲醇喷雾进行了研究。结果表明:随着甲醇温度的升高,喷雾雾化质量提高,甲醇射流液柱减少,液滴索特平均直径(SMD)减小,同时喷雾主射流区向外扩张。另外,喷雾贯穿距和液滴速度均呈先增大后减小的趋势,在70℃时达到最大值。在相同温度下,喷醇压力的增加提高了喷雾液滴速度,有助于贯穿距的增大,同时液滴索特平均直径(SMD)明显减小。因此在柴油机进气预混甲醇燃烧的实际应用中,升高液态甲醇温度至70℃左右,并适当增大喷醇压力至0.5MPa,是一种有效提高气道内甲醇雾化效果的方法。
Yao Chunde  Chen Zhifang  Wu Taoyang  Hu Jiangtao  Yang Xian  Chen Shixing
Tianjin University,Tianjin University,Tianjin University,Tianjin University,Tianjin University and Tianjin University
Key Words:Methanol Spray Temperature Pressure Laser phase Doppler particle analyzer High speed camera
Abstract:In order to understand the spray characteristics with methanol temperature and spray pressure changes, a high speed camera and 3D laser phase Doppler particle analyzer(PDPA) was used to research the methanol spray as fuel temperature was 25℃, 50℃, 60℃, 70℃ and 80℃ respectively, and methanol injection pressure was 0.3MPa, 0.4MPa, 0.5MPa respectively. The results show that, with the increase of methanol temperature, the spray atomization quality was improved, the liquid core of methanol jet was reduced, and the spray droplet Sauter mean diameter (SMD) was decreased, meanwhile, the location of main jet zone was expanded from 7mm to 10mm. At the same time, spray penetration and the velocity of droplet was first increased and then decreased with the increase of methanol temperature, and when the methanol temperature reached 70℃, they both had the maximum value. When the temperature of methanol remained the same, the increase of injection pressure can improve the velocity of spray droplets, which contributed to the increase of penetration, moreover, the droplet Sauter mean diameter (SMD) decreased obviously. Thus, in the application of methanol fumigated diesel engine, it is an effective measure to improve methanol atomization by increasing methanol temperature and injection pressure to around 70℃ and 0.5MPa, respectively.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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