کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6593770 | 1423546 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative study of laser ignition and spark-plug ignition in high-speed flows
ترجمه فارسی عنوان
بررسی مقایسه ای از جرقه لامپ و جرقه زدگی در جریان های با سرعت بالا
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کلمات کلیدی
آتش گرفتن، لیزر، شمع موتور، جریان با سرعت بالا، اتیلن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Laser ignition and spark-plug ignition were experimentally compared in high-speed ethylene-oxygen mixture flows of up to approximately 100â¯m/s. Nd:YAG laser of 12-ns pulse duration and a semi-surface-discharge-type spark plug of 1.8-ms discharge duration were used to conduct the experiments with deposited energy of approximately 24â¯mJ in both cases. The self-emission was observed by a high-speed camera. The flame-spread behavior and ignition ability were examined in lean-fuel conditions. The study findings revealed that laser ignition was superior to the spark-plug ignition in the aspect of the early-stage rapid flame spread, although it showed lower probability of successful ignition than that by the spark plug near the lean-fuel ignitable limit. These findings suggest that the ignition in high-speed flows is significantly influenced by the turbulence via the enhancement of heat transport in particular.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 191, May 2018, Pages 408-416
Journal: Combustion and Flame - Volume 191, May 2018, Pages 408-416
نویسندگان
Takuma Endo, Keisuke Kuwamoto, Kim Wookyung, Tomoyuki Johzaki, Daisuke Shimokuri, Shin-ichi Namba,