Experimental Investigation of Premixed Swirling Jet Flames : Velocity and Turbulence Intensity of Swirling Air Jets

概要

論文の詳細を見る
Swirling motion produces notable effects on diffusion or premixed flames, making the flame short and highly stable throughout a wide range of fuel-air ratios. In order to explain these effects, experiments were carried out in a series of axisymmetrical turbulent air jets with swirl, and measurements were made of velocity profiles and turbulence intensity profiles. In the case of high degree of swirl, a recirculation region is set up in the vicinity of the nozzle exit and the velocity decay is very large and, in addition, the turbulence intensity increases. The swirl number is taken to characterize the swirling air jets. The dependence of the swirl number on the total flow rates and on the ratio of the flow rates of the air introduced tangentially to that introduced axially into the swirl generator is discussed.
一般社団法人日本機械学会の論文