급속삽입법을 이용한 연료 유량에 따른 동축류 확산화염에서의 온도 측정에 관한 연구

Abstract

Co-flow laminar diffusion flames' temperature has been studied experimentally for ethylene(C₂H₄) using a co-flow burner in order to investigate the characteristics of diffusion flame's temperature distribution. The temperature distributions in the flame were measured by rapid insertion of a R-type thermocouple. The measurement area was divided into three zones. Ⅰst area was expect to created PAH zone, Ⅱnd area was expect to form soot zone, which is known to generate most soot volume fraction, and Ⅲrd area was expect to form soot oxidization zone. Also, The temperature along the flame y-axis as a fuel quantity was measured. As a results, we have measured temperature neglecting the effect of soot particles attached to the thermocouple junction, which is close to the nozzle and upstream zone has a unstable flow in co-flow diffusion flame and acquires that the flame y-axis temperature has a uniform temperature in the generated soot volume fraction zone(Ⅱnd).