F. Tang, L. H. Hu, Q. Wang and Z. J. Ding (2014) Flame pulsation frequency of conduction-controlled rectangular hydrocarbon pool fires of different aspect ratios in a sub-atmospheric pressure. Journal/International Journal Of Heat And Mass Transfer 76 447-451. [In English]
Web link: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2014.04.047
Keywords: ,Hydrocarbon rectangular pool fire, Aspect ratio, Flame pulsation, frequency, Sub-atmospheric pressure, CROSS AIR-FLOW, COMBUSTION CHARACTERISTICS, N-HEPTANE, DIFFUSION FLAMES, BUOYANT PLUMES, BURNING RATES, WIND-TUNNEL, CRIB FIRES, BEHAVIOR, INSTABILITY

Abstract: This paper reveals the flame pulsation behavior of conduction-controlled rectangular hydrocarbon pool fires in a sub-atmospheric pressure. Experiments are carried out in both normal- (100 kPa, Hefei city, altitude 50 m) and reduced (64 kPa, Lhasa city, altitude 3650 m) pressure atmospheres, using rectangular ethanol pool fires with the same area S (36 cm(2)) but different aspect ratios (long side divided by short side n = L/W = 1, 2, 3, 4, 8). Results show that the flame pulsation frequency of the pool fire changes small with pressure, meanwhile increases with aspect ratio, which can be well characterized by a non-dimensional function between Strouhal number (St) and Froude number (Fr). (C) 2014 Elsevier Ltd. All rights reserved.