THERMALLY DRIVEN BUOYANCY WITHIN A HOT LAYER DUE TO SPRINKLER OPERATION

• 영문명: THERMALLY DRIVEN BUOYANCY WITHIN A HOT LAYER DUE TO SPRINKLER OPERATION
• 발행기관: 한국화재소방학회
• 저자명: Nyankina, K. F Turan, O.
• 간행물 정보: 『한국화재소방학회 학술대회논문집』1997년도 International Symposium on Fire Science and Technology, 625~632쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 1997.11.30

영문 초록

A two-dimensional zone-like model is developed to predict the interaction between hot gas layer and water droplets after sprinkler activation. The model combines the motion equations for each droplet with heat and mass transfer between the gas and water. The results indicate that negative buoyancy in the hot layer can only be obtained if the initial temperature profile is uniform. If an experimental profile Is used instead, positive buoyancy results. This conclusion has been confirmed with experimental data.