Experimental study on the soot formation behavior of octane single fuel droplet under the constant volume combustion conditions

This study was performed to provide the information of the soot formation behavior of octane single fuel droplet under the identical combustion conditions. To achieve this, this experimental study provide the results of the soot formation characteristics of octane droplet in accordance with different initial droplet diameter(d0), at the same time, experiment was conducted under the same combustion conditions which are 1.0atm of ambient pressure(Pamb), 21% of oxygen concentration(O2) and 79% of nitrogen concentration(N2). Visualization of octane droplet combustion was performed by visualization system with high speed camera. The results of maximum soot volume fraction(fvmax) was almost the same under the equivalent ambient conditions regardless of initial droplet diameter. Furthermore, maximum soot volume fraction was showed the higher value in the measuring direction between 135° and 315° since the soot-tail is generated during two opposing igniters movement process. ©2017 The Korean Society of Mechanical Engineers.