激波及诱导的高速气流抛撒柴油油膜的实验研究

发布时间：2018-03-09 02:05

本文选题：激波　切入点：高速气流　出处：《高压物理学报》2016年03期 　论文类型：期刊论文

【摘要】：采用立式激波管装置,研究了激波及诱导的高速气流抛撒4种柴油油膜的规律及其雾化过程。运用压力测试系统得到了激波作用油膜前后的压力、波速的变化,并通过阴影成像系统记录了油膜的抛撒情况。实验结果表明:马赫数约为1.12的激波作用4种油膜后激波均衰减为高速气流,并且黏度较小的1、2号油膜雾化效果较好,而黏度较大的3、4号油膜抛撒后呈液块、液丝状。黏度较小的油膜初始抛撒速度大,但抛撒速度衰减较快,而黏度较大的油膜对气动力的阻碍作用更大,所以初始抛撒速度较小,且抛撒的距离和速度随黏度的增大而减小。
[Abstract]:By using a vertical shock tube device, the regularity and atomization process of four kinds of diesel oil film were studied by shock wave and induced high speed airflow. The changes of pressure and wave velocity before and after the shock wave acting on the oil film were obtained by using the pressure measurement system. The distribution of oil film is recorded by shadow imaging system. The experimental results show that the shock wave with Mach number of about 1.12 can attenuate to high speed airflow, and the atomization effect of oil film No. 1 and No. 2 with lower viscosity is better. However, the oil film with higher viscosity (3, 4) appeared as a liquid block after dispersing, and the oil film with lower viscosity had a large initial dispersal speed, but the velocity of dispersal decreased more rapidly, while the oil film with higher viscosity had a greater hindrance to aerodynamic force, so the initial throwing speed was smaller. The dispersion distance and velocity decrease with the increase of viscosity.
【作者单位】：南京理工大学化工学院;常州大学环境与安全工程学院;南京理工大学瞬态物理国家重点实验室;中国人民解放军总后勤部油料研究所;山西江阳化工有限公司;
【基金】：国家科技部国际科技合作重大专项资助(2013DFR60080) 江苏省科技厅计划项目(BE2014735) 常州市科技发展项目(CE20135035)
【分类号】：O354.5

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