보염기 형상이 연료액적분포와 연소특성에 미치는 영향 Effect of Bluff-body Geometries on the Fuel Drop Distribution and the Combustion Characteristics
pp.33-39
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.
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
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