반밀폐 공간 내 통풍구의 위치가 수소-공기 혼합물 벤트 폭연에 미치는 영향

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 36; no. 2; pp. 184 - 194
• Main Authors: 윤웅기, 김준식, 박병직, 황인주, 김우경, 김양균, UNGGI YOON, JOONSIK KIM, BYOUNGJIK PARK, INJU HWANG, WOOKYUNG KIM, YANGKYUNG KIM
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 01.04.2025
• Subjects: 기계공학
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2025.36.2.184

The explosion experiment was conducted by filling a large-scale structure with hydrogen-air mixture and performing a vented deflagration test to investigate the effects of hydrogen concentration and vent location on the vented deflagration. The results showed that the maximum pressure difference varied by about 2.6 times depending on the vent location, while the external flame behavior did not show significant differences. However, as the hydrogen concentration increased, the maximum flame length also increased. Additionally, when evaluating the performance of the analytical model for calculating maximum reduced overpressure, it was found that the model showed a high degree of agreement with experimental data under roof vent conditions, whereas under side vent conditions, the predicted values were generally lower than the experimental results. Even when applying a conservative model, although the prediction accuracy was improved, challenges in prediction accuracy still remain.