Study on laser induced ignition for methane-air mixtures with pico-second pulse duration laser

被引：0

作者：

Furui, Kenji ^{[1
]}

Hayashi, Jun ^{[1
]}

Okada, Tomoki ^{[1
]}

Nakatsuka, Nonaki ^{[1
]}

Taira, Takunon ^{[1
]}

Hori, Terushige ^{[1
]}

Akamatsu, Fumiteru ^{[1
]}

机构：

[1] Department of Mechanical Engineering, Graduate School of Engineering Science, Osaka University, Suita, Osaka 565-0871

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2012年 / 78卷 / 795期

基金：

日本学术振兴会;

关键词：

Breakdown; High pressure; Laser ignition; Minimum pulse energy; Pico-second duration time;

D O I：

10.1299/kikaib.78.2004

中图分类号：

学科分类号：

摘要：

Ignition by using a laser-induced breakdown (Laser-induced ignition) is considered as a new approach to control the ignition phenomena. It is known that the laser-induced ignition is affected by characteristics of the laser source. In this study, effects of the pico-second order pulse duration of laser source on laser induced ignition phenomena of methane-air lean premixed gas are examined experimentally. Plus durations of laser and conditions of initial gaseous pressure are varied for investigating the effects of laser duration time on Laser-induced ignition. Results clearly show that the minimum ignition energy decreases with increasing the initial pressure. This tendency is same as the previously reported results by using the laser which has nano-second order pulse duration. On the other hand, there is little difference in the minimum pulse energy for ignition with the difference of laser pulse duration time. © 2012 The Japan Society of Mechanical Engineers.

引用

页码：2004 / 2014

页数：10

共 4 条

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[4] Ji X., Pu Z., Effective Rayleigh range of Gaussian array beams propagating through atmospheric turbulence, Optics Communications, 283, pp. 3884-3890, (2010)

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