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http://dx.doi.org/10.3795/KSME-B.2015.39.2.161

Effects of Driving Frequency on Propagation Characteristics of Methane-Air Premixed Flame Influenced by Ultrasonic Standing Wave  

Bae, Dae Seok (Dept. of Mechanical Engineering, Pukyong Nat'l Univ.)
Seo, Hang Seok (Development Team, Daejeon Plant, Hanwha Corp.)
Kim, Jeong Soo (Dept. of Mechanical Engineering, Pukyong Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.39, no.2, 2015 , pp. 161-168 More about this Journal
Abstract
An experimental study was conducted to scrutinize the influence of the frequency of an ultrasonic standing wave on the variation in the behavior of a methane-air premixed flame. The evolutionary features of the propagating flame were captured by a high-speed camera, and the macroscopic flame behavior, including the flame structure and local velocities, was investigated in detail using a post-processing analysis of the high-speed images. It was found that a structural variation and propagation-velocity augmentation of the methane-air premixed flame were caused by the intervention of the ultrasonic standing wave, which enhanced the combustion reaction. Conclusive evidence for the dependency of the flame behaviors on the driving frequency of the ultrasonic standing wave and equivalence ratio of the reactants is presented.
Keywords
Premixed Flame; Methane-Air; Ultrasonic Standing Wave; Flame Dynamics; Driving Frequency;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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