This work was performed to investigate the distribution of the fuel droplet size around the bluff-body and the combustion characteristics. The geometry of the bluff-body influenced the spray shape and the combustion characteristics. Diameters of the bluff-body in this experiment are 6, 8, and 10mm and the impingement angles( θ) are 30°, 60°, and 90°. The measurement points were at the distances of 20 and 30mm axially from the nozzle. The SMD and Rosin-Rammler distribution was acquired by image processing technique(PMAS), and the mean temperatures were measured by thermocouple. The results obtained are as follows; In the condition of θ=60°, the values of SMD are not greatly varied compared to the other conditions. As the impingement angle of bluff-body was increased, the high temperature region was wider along radial direction. When the air-fuel ratio was increased, the CO concentration was decreased.

Abstract
 1. 서 론
 2. 실험장치 및 방법
  2. 1 실험장치
  2. 2 실험방법
  2. 3 실험조건
 3. 실험결과 및 고찰
  3. 1 액적의 SMD 분포
  3. 2 화염의 가시화
  3. 3 온도분포
  3.4 배출물 특성
 4. 결 론
 참 고 문 헌

• 황상호(부산대학교 기계공학과 대학원) | S. H. HWANG
• 김경모(동의과학대학 컴퓨터응용기계계열) | K. M. KIM
• 권형정(동의과학대학 컴퓨터응용기계계열) | H. J. KWON