Holographic measurement of evaporating diesel sprays under high pressure and temperature.
Holographic measurement of evaporating diesel sprays under high pressure and temperature.
复制标题
高压高温下蒸发柴油喷雾的全息测量。
DOI：
10.1299/kikaib.52.2457
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
H. Hiroyasu
中科院分区：
文献类型：
--
作者：
K. Nishida;Naoki Murakami;H. Hiroyasu
本文应用脉冲激光全息技术对高温高压下柴油喷雾进行了静态弹内的观测。本研究采用了两种不同的全息技术，即单脉冲激光全息术和双脉冲全息干涉术。拍摄了喷雾的重建图像的阴影照片、纹影照片和显微照片。用显微镜测量了油滴的喷雾宽度和当量比。利用单脉冲激光全息术可以在高温高压环境下观察喷雾周围的油滴和水蒸气。采用双脉冲全息干涉法，在喷雾边缘观察到干涉条纹，使喷雾边缘与大气的对比更加明显。随着大气温度的升高，喷雾宽度有减小的趋势。在压力为3.1MPa、温度为773K的条件下，喷雾周围仍有液滴存在。
Application of the pulsed laser laser holography technique was made to observe diesel sprays injected into a high pressure and temperature atmosphere in a quiescent bomb. Two different holography techniques, that is, single-pulsed laser holography and double-pulsed holographic interferometry were adopted in this study. Shadowgraphs, schlieren photographs and micrographs of a reconstructed image of the spray were taken. The spray widths and equivalence ratios of fuel droplets were microscopically measured. The fuel droplets and vapor around the spray in a high pressure and temperature atmosphere could be observed by single-pulsed laser holography. By double-pulsed holographic interferometry, interference fringes were observed at the spray edge, and the contrast between the spray edge and the atmosphere was made more striking. The spray width has a tendency to decrease when the atmospheric temperature is increased. Some droplets were observed around the spray up to the pressure 3.1 MPa and the temperature 773K.