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http://dx.doi.org/10.3795/KSME-B.2002.26.2.336

The Effect of Swirl Intensity on Flow and Combustion Characteristics of Flat Flame Burner  

Jeong, Yong-Gi (Dept.of Mechanical Engineering, Graduate School of Busan National University)
Kim, Gyeong-Cheon (Mechanical Technology Research Center, Dept.of Mechanical Engineering, Busan National University)
Jeon, Chung-Hwan (Mechanical Technology Research Center, Dept.of Mechanical Engineering, Busan National University)
Jang, Yeong-Jun (Mechanical Technology Research Center, Dept.of Mechanical Engineering, Busan National University)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.2, 2002 , pp. 336-344 More about this Journal
Abstract
In this study, the flow and combustion characteristics of flat flame burner with twirler were investigated. There are several factors that define the characteristics of burner. Among them, the experiments was focused on swirl effect by four types of twirler in terms of flow structure, distribution of temperature and emission characteristics. In PIV(Particle Image Velocimetry) experiment, the less of swirl number, axial flow is dominant at the center. As swirl number increases, the flow develops along the burner tile and backward flow becomes stronger at center. From the combustion characteristics, as long as combustion load increases, blow-off limit was improved. But at the higher swirl number, the limit is decreased. At swirl number 0, the temperature is shown typical distribution of long flame burner. but swirl number increases, the temperature distribution is uniform in front of round tile. Therefore, the temperature distribution is coincided with flow structure. As excess air ratio increases, NO concentrations are high. But high swirl number gives rise to become low NO concentrations. The flame characteristics are comprised in wrinkled laminar-flame regime according to turbulence Reynolds number(Rel) and Damkohler number(Da).
Keywords
Flat Flame Burner; Recirculation Zone; PIV(Particle Image Velocity; Swirl Number; Damkohler Number;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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